VMMR0.cpp@ 90297

最後變更在這個檔案從90297是 90190,由 vboxsync 提交於 4 年前
VMM/VMMR0: Disabled the unnecessary VERR_VMM_CONTEXT_HOOK_STILL_ENABLED check. Some related guru report adjustments. bugref:10064 ticketref:20090 ticketref:20456
屬性 svn:eol-style 設為 `native` 屬性 svn:keywords 設為 `Id Revision`
檔案大小: 103.8 KB

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1	/* $Id: VMMR0.cpp 90190 2021-07-14 16:50:45Z vboxsync $ */
2	/** @file
3	* VMM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.alldomusa.eu.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_VMM
23	#include <VBox/vmm/vmm.h>
24	#include <VBox/sup.h>
25	#include <VBox/vmm/iom.h>
26	#include <VBox/vmm/trpm.h>
27	#include <VBox/vmm/cpum.h>
28	#include <VBox/vmm/pdmapi.h>
29	#include <VBox/vmm/pgm.h>
30	#ifdef VBOX_WITH_NEM_R0
31	# include <VBox/vmm/nem.h>
32	#endif
33	#include <VBox/vmm/em.h>
34	#include <VBox/vmm/stam.h>
35	#include <VBox/vmm/tm.h>
36	#include "VMMInternal.h"
37	#include <VBox/vmm/vmcc.h>
38	#include <VBox/vmm/gvm.h>
39	#ifdef VBOX_WITH_PCI_PASSTHROUGH
40	# include <VBox/vmm/pdmpci.h>
41	#endif
42	#include <VBox/vmm/apic.h>
43
44	#include <VBox/vmm/gvmm.h>
45	#include <VBox/vmm/gmm.h>
46	#include <VBox/vmm/gim.h>
47	#include <VBox/intnet.h>
48	#include <VBox/vmm/hm.h>
49	#include <VBox/param.h>
50	#include <VBox/err.h>
51	#include <VBox/version.h>
52	#include <VBox/log.h>
53
54	#include <iprt/asm-amd64-x86.h>
55	#include <iprt/assert.h>
56	#include <iprt/crc.h>
57	#include <iprt/mp.h>
58	#include <iprt/once.h>
59	#include <iprt/stdarg.h>
60	#include <iprt/string.h>
61	#include <iprt/thread.h>
62	#include <iprt/timer.h>
63	#include <iprt/time.h>
64
65	#include "dtrace/VBoxVMM.h"
66
67
68	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
69	# pragma intrinsic(_AddressOfReturnAddress)
70	#endif
71
72	#if defined(RT_OS_DARWIN) && ARCH_BITS == 32
73	# error "32-bit darwin is no longer supported. Go back to 4.3 or earlier!"
74	#endif
75
76
77
78	/*********************************************************************************************************************************
79	* Defined Constants And Macros *
80	*********************************************************************************************************************************/
81	/** @def VMM_CHECK_SMAP_SETUP
82	* SMAP check setup. */
83	/** @def VMM_CHECK_SMAP_CHECK
84	* Checks that the AC flag is set if SMAP is enabled. If AC is not set,
85	* it will be logged and @a a_BadExpr is executed. */
86	/** @def VMM_CHECK_SMAP_CHECK2
87	* Checks that the AC flag is set if SMAP is enabled. If AC is not set, it will
88	* be logged, written to the VMs assertion text buffer, and @a a_BadExpr is
89	* executed. */
90	#if (defined(VBOX_STRICT) \|\| 1) && !defined(VBOX_WITH_RAM_IN_KERNEL)
91	# define VMM_CHECK_SMAP_SETUP() uint32_t const fKernelFeatures = SUPR0GetKernelFeatures()
92	# define VMM_CHECK_SMAP_CHECK(a_BadExpr) \
93	do { \
94	if (fKernelFeatures & SUPKERNELFEATURES_SMAP) \
95	{ \
96	RTCCUINTREG fEflCheck = ASMGetFlags(); \
97	if (RT_LIKELY(fEflCheck & X86_EFL_AC)) \
98	{ /* likely */ } \
99	else \
100	{ \
101	SUPR0Printf("%s, line %d: EFLAGS.AC is clear! (%#x)\n", __FUNCTION__, __LINE__, (uint32_t)fEflCheck); \
102	a_BadExpr; \
103	} \
104	} \
105	} while (0)
106	# define VMM_CHECK_SMAP_CHECK2(a_pGVM, a_BadExpr) \
107	do { \
108	if (fKernelFeatures & SUPKERNELFEATURES_SMAP) \
109	{ \
110	RTCCUINTREG fEflCheck = ASMGetFlags(); \
111	if (RT_LIKELY(fEflCheck & X86_EFL_AC)) \
112	{ /* likely */ } \
113	else if (a_pGVM) \
114	{ \
115	SUPR0BadContext((a_pGVM)->pSession, __FILE__, __LINE__, "EFLAGS.AC is zero!"); \
116	RTStrPrintf((a_pGVM)->vmm.s.szRing0AssertMsg1, sizeof((a_pGVM)->vmm.s.szRing0AssertMsg1), \
117	"%s, line %d: EFLAGS.AC is clear! (%#x)\n", __FUNCTION__, __LINE__, (uint32_t)fEflCheck); \
118	a_BadExpr; \
119	} \
120	else \
121	{ \
122	SUPR0Printf("%s, line %d: EFLAGS.AC is clear! (%#x)\n", __FUNCTION__, __LINE__, (uint32_t)fEflCheck); \
123	a_BadExpr; \
124	} \
125	} \
126	} while (0)
127	#else
128	# define VMM_CHECK_SMAP_SETUP() uint32_t const fKernelFeatures = 0
129	# define VMM_CHECK_SMAP_CHECK(a_BadExpr) NOREF(fKernelFeatures)
130	# define VMM_CHECK_SMAP_CHECK2(a_pGVM, a_BadExpr) NOREF(fKernelFeatures)
131	#endif
132
133
134	/*********************************************************************************************************************************
135	* Internal Functions *
136	*********************************************************************************************************************************/
137	RT_C_DECLS_BEGIN
138	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
139	extern uint64_t __udivdi3(uint64_t, uint64_t);
140	extern uint64_t __umoddi3(uint64_t, uint64_t);
141	#endif
142	RT_C_DECLS_END
143
144
145	/*********************************************************************************************************************************
146	* Global Variables *
147	*********************************************************************************************************************************/
148	/** Drag in necessary library bits.
149	* The runtime lives here (in VMMR0.r0) and VBoxDDR0.r0 links against us. /
150	struct CLANG11WEIRDNOTHROW { PFNRT pfn; } g_VMMR0Deps[] =
151	{
152	{ (PFNRT)RTCrc32 },
153	{ (PFNRT)RTOnce },
154	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
155	{ (PFNRT)__udivdi3 },
156	{ (PFNRT)__umoddi3 },
157	#endif
158	{ NULL }
159	};
160
161	#ifdef RT_OS_SOLARIS
162	/* Dependency information for the native solaris loader. */
163	extern "C" { char _depends_on[] = "vboxdrv"; }
164	#endif
165
166
167	/**
168	* Initialize the module.
169	* This is called when we're first loaded.
170	*
171	* @returns 0 on success.
172	* @returns VBox status on failure.
173	* @param hMod Image handle for use in APIs.
174	*/
175	DECLEXPORT(int) ModuleInit(void *hMod)
176	{
177	VMM_CHECK_SMAP_SETUP();
178	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
179
180	#ifdef VBOX_WITH_DTRACE_R0
181	/*
182	* The first thing to do is register the static tracepoints.
183	* (Deregistration is automatic.)
184	*/
185	int rc2 = SUPR0TracerRegisterModule(hMod, &g_VTGObjHeader);
186	if (RT_FAILURE(rc2))
187	return rc2;
188	#endif
189	LogFlow(("ModuleInit:\n"));
190
191	#ifdef VBOX_WITH_64ON32_CMOS_DEBUG
192	/*
193	* Display the CMOS debug code.
194	*/
195	ASMOutU8(0x72, 0x03);
196	uint8_t bDebugCode = ASMInU8(0x73);
197	LogRel(("CMOS Debug Code: %#x (%d)\n", bDebugCode, bDebugCode));
198	RTLogComPrintf("CMOS Debug Code: %#x (%d)\n", bDebugCode, bDebugCode);
199	#endif
200
201	/*
202	* Initialize the VMM, GVMM, GMM, HM, PGM (Darwin) and INTNET.
203	*/
204	int rc = vmmInitFormatTypes();
205	if (RT_SUCCESS(rc))
206	{
207	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
208	rc = GVMMR0Init();
209	if (RT_SUCCESS(rc))
210	{
211	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
212	rc = GMMR0Init();
213	if (RT_SUCCESS(rc))
214	{
215	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
216	rc = HMR0Init();
217	if (RT_SUCCESS(rc))
218	{
219	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
220
221	PDMR0Init(hMod);
222	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
223
224	rc = PGMRegisterStringFormatTypes();
225	if (RT_SUCCESS(rc))
226	{
227	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
228	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
229	rc = PGMR0DynMapInit();
230	#endif
231	if (RT_SUCCESS(rc))
232	{
233	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
234	rc = IntNetR0Init();
235	if (RT_SUCCESS(rc))
236	{
237	#ifdef VBOX_WITH_PCI_PASSTHROUGH
238	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
239	rc = PciRawR0Init();
240	#endif
241	if (RT_SUCCESS(rc))
242	{
243	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
244	rc = CPUMR0ModuleInit();
245	if (RT_SUCCESS(rc))
246	{
247	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
248	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
249	rc = vmmR0TripleFaultHackInit();
250	if (RT_SUCCESS(rc))
251	#endif
252	{
253	VMM_CHECK_SMAP_CHECK(rc = VERR_VMM_SMAP_BUT_AC_CLEAR);
254	if (RT_SUCCESS(rc))
255	{
256	LogFlow(("ModuleInit: returns success\n"));
257	return VINF_SUCCESS;
258	}
259	}
260
261	/*
262	* Bail out.
263	*/
264	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
265	vmmR0TripleFaultHackTerm();
266	#endif
267	}
268	else
269	LogRel(("ModuleInit: CPUMR0ModuleInit -> %Rrc\n", rc));
270	#ifdef VBOX_WITH_PCI_PASSTHROUGH
271	PciRawR0Term();
272	#endif
273	}
274	else
275	LogRel(("ModuleInit: PciRawR0Init -> %Rrc\n", rc));
276	IntNetR0Term();
277	}
278	else
279	LogRel(("ModuleInit: IntNetR0Init -> %Rrc\n", rc));
280	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
281	PGMR0DynMapTerm();
282	#endif
283	}
284	else
285	LogRel(("ModuleInit: PGMR0DynMapInit -> %Rrc\n", rc));
286	PGMDeregisterStringFormatTypes();
287	}
288	else
289	LogRel(("ModuleInit: PGMRegisterStringFormatTypes -> %Rrc\n", rc));
290	HMR0Term();
291	}
292	else
293	LogRel(("ModuleInit: HMR0Init -> %Rrc\n", rc));
294	GMMR0Term();
295	}
296	else
297	LogRel(("ModuleInit: GMMR0Init -> %Rrc\n", rc));
298	GVMMR0Term();
299	}
300	else
301	LogRel(("ModuleInit: GVMMR0Init -> %Rrc\n", rc));
302	vmmTermFormatTypes();
303	}
304	else
305	LogRel(("ModuleInit: vmmInitFormatTypes -> %Rrc\n", rc));
306
307	LogFlow(("ModuleInit: failed %Rrc\n", rc));
308	return rc;
309	}
310
311
312	/**
313	* Terminate the module.
314	* This is called when we're finally unloaded.
315	*
316	* @param hMod Image handle for use in APIs.
317	*/
318	DECLEXPORT(void) ModuleTerm(void *hMod)
319	{
320	NOREF(hMod);
321	LogFlow(("ModuleTerm:\n"));
322
323	/*
324	* Terminate the CPUM module (Local APIC cleanup).
325	*/
326	CPUMR0ModuleTerm();
327
328	/*
329	* Terminate the internal network service.
330	*/
331	IntNetR0Term();
332
333	/*
334	* PGM (Darwin), HM and PciRaw global cleanup.
335	*/
336	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
337	PGMR0DynMapTerm();
338	#endif
339	#ifdef VBOX_WITH_PCI_PASSTHROUGH
340	PciRawR0Term();
341	#endif
342	PGMDeregisterStringFormatTypes();
343	HMR0Term();
344	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
345	vmmR0TripleFaultHackTerm();
346	#endif
347
348	/*
349	* Destroy the GMM and GVMM instances.
350	*/
351	GMMR0Term();
352	GVMMR0Term();
353
354	vmmTermFormatTypes();
355
356	LogFlow(("ModuleTerm: returns\n"));
357	}
358
359
360	/**
361	* Initiates the R0 driver for a particular VM instance.
362	*
363	* @returns VBox status code.
364	*
365	* @param pGVM The global (ring-0) VM structure.
366	* @param uSvnRev The SVN revision of the ring-3 part.
367	* @param uBuildType Build type indicator.
368	* @thread EMT(0)
369	*/
370	static int vmmR0InitVM(PGVM pGVM, uint32_t uSvnRev, uint32_t uBuildType)
371	{
372	VMM_CHECK_SMAP_SETUP();
373	VMM_CHECK_SMAP_CHECK(return VERR_VMM_SMAP_BUT_AC_CLEAR);
374
375	/*
376	* Match the SVN revisions and build type.
377	*/
378	if (uSvnRev != VMMGetSvnRev())
379	{
380	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
381	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
382	return VERR_VMM_R0_VERSION_MISMATCH;
383	}
384	if (uBuildType != vmmGetBuildType())
385	{
386	LogRel(("VMMR0InitVM: Build type mismatch, r3=%#x r0=%#x\n", uBuildType, vmmGetBuildType()));
387	SUPR0Printf("VMMR0InitVM: Build type mismatch, r3=%#x r0=%#x\n", uBuildType, vmmGetBuildType());
388	return VERR_VMM_R0_VERSION_MISMATCH;
389	}
390
391	int rc = GVMMR0ValidateGVMandEMT(pGVM, 0 /idCpu/);
392	if (RT_FAILURE(rc))
393	return rc;
394
395	#ifdef LOG_ENABLED
396	/*
397	* Register the EMT R0 logger instance for VCPU 0.
398	*/
399	PVMCPUCC pVCpu = VMCC_GET_CPU_0(pGVM);
400
401	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
402	if (pR0Logger)
403	{
404	# if 0 /* testing of the logger. */
405	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
406	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
407	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
408	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
409
410	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pGVM->pSession);
411	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
412	RTLogSetDefaultInstanceThread(NULL, pGVM->pSession);
413	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
414
415	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
416	LogCom(("vmmR0InitVM: returned successfully from direct logger call.\n"));
417	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
418	LogCom(("vmmR0InitVM: returned successfully from direct flush call.\n"));
419
420	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pGVM->pSession);
421	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
422	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
423	LogCom(("vmmR0InitVM: returned successfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
424	RTLogSetDefaultInstanceThread(NULL, pGVM->pSession);
425	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
426
427	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
428	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
429
430	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pGVM->pSession);
431	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
432	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
433	# endif
434	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pGVM->pSession));
435	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pGVM->pSession);
436	pR0Logger->fRegistered = true;
437	}
438	#endif /* LOG_ENABLED */
439
440	/*
441	* Check if the host supports high resolution timers or not.
442	*/
443	if ( pGVM->vmm.s.fUsePeriodicPreemptionTimers
444	&& !RTTimerCanDoHighResolution())
445	pGVM->vmm.s.fUsePeriodicPreemptionTimers = false;
446
447	/*
448	* Initialize the per VM data for GVMM and GMM.
449	*/
450	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
451	rc = GVMMR0InitVM(pGVM);
452	if (RT_SUCCESS(rc))
453	{
454	/*
455	* Init HM, CPUM and PGM (Darwin only).
456	*/
457	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
458	rc = HMR0InitVM(pGVM);
459	if (RT_SUCCESS(rc))
460	VMM_CHECK_SMAP_CHECK2(pGVM, rc = VERR_VMM_RING0_ASSERTION); /* CPUR0InitVM will otherwise panic the host */
461	if (RT_SUCCESS(rc))
462	{
463	rc = CPUMR0InitVM(pGVM);
464	if (RT_SUCCESS(rc))
465	{
466	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
467	rc = PGMR0InitVM(pGVM);
468	if (RT_SUCCESS(rc))
469	{
470	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
471	rc = EMR0InitVM(pGVM);
472	if (RT_SUCCESS(rc))
473	{
474	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
475	#ifdef VBOX_WITH_PCI_PASSTHROUGH
476	rc = PciRawR0InitVM(pGVM);
477	#endif
478	if (RT_SUCCESS(rc))
479	{
480	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
481	rc = GIMR0InitVM(pGVM);
482	if (RT_SUCCESS(rc))
483	{
484	VMM_CHECK_SMAP_CHECK2(pGVM, rc = VERR_VMM_RING0_ASSERTION);
485	if (RT_SUCCESS(rc))
486	{
487	GVMMR0DoneInitVM(pGVM);
488
489	/*
490	* Collect a bit of info for the VM release log.
491	*/
492	pGVM->vmm.s.fIsPreemptPendingApiTrusty = RTThreadPreemptIsPendingTrusty();
493	pGVM->vmm.s.fIsPreemptPossible = RTThreadPreemptIsPossible();;
494
495	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
496	return rc;
497	}
498
499	/* bail out*/
500	GIMR0TermVM(pGVM);
501	}
502	#ifdef VBOX_WITH_PCI_PASSTHROUGH
503	PciRawR0TermVM(pGVM);
504	#endif
505	}
506	}
507	}
508	}
509	HMR0TermVM(pGVM);
510	}
511	}
512
513	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pGVM->pSession);
514	return rc;
515	}
516
517
518	/**
519	* Does EMT specific VM initialization.
520	*
521	* @returns VBox status code.
522	* @param pGVM The ring-0 VM structure.
523	* @param idCpu The EMT that's calling.
524	*/
525	static int vmmR0InitVMEmt(PGVM pGVM, VMCPUID idCpu)
526	{
527	/* Paranoia (caller checked these already). */
528	AssertReturn(idCpu < pGVM->cCpus, VERR_INVALID_CPU_ID);
529	AssertReturn(pGVM->aCpus[idCpu].hEMT == RTThreadNativeSelf(), VERR_INVALID_CPU_ID);
530
531	#ifdef LOG_ENABLED
532	/*
533	* Registration of ring 0 loggers.
534	*/
535	PVMCPUCC pVCpu = &pGVM->aCpus[idCpu];
536	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
537	if ( pR0Logger
538	&& !pR0Logger->fRegistered)
539	{
540	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pGVM->pSession);
541	pR0Logger->fRegistered = true;
542	}
543	#endif
544
545	return VINF_SUCCESS;
546	}
547
548
549
550	/**
551	* Terminates the R0 bits for a particular VM instance.
552	*
553	* This is normally called by ring-3 as part of the VM termination process, but
554	* may alternatively be called during the support driver session cleanup when
555	* the VM object is destroyed (see GVMM).
556	*
557	* @returns VBox status code.
558	*
559	* @param pGVM The global (ring-0) VM structure.
560	* @param idCpu Set to 0 if EMT(0) or NIL_VMCPUID if session cleanup
561	* thread.
562	* @thread EMT(0) or session clean up thread.
563	*/
564	VMMR0_INT_DECL(int) VMMR0TermVM(PGVM pGVM, VMCPUID idCpu)
565	{
566	/*
567	* Check EMT(0) claim if we're called from userland.
568	*/
569	if (idCpu != NIL_VMCPUID)
570	{
571	AssertReturn(idCpu == 0, VERR_INVALID_CPU_ID);
572	int rc = GVMMR0ValidateGVMandEMT(pGVM, idCpu);
573	if (RT_FAILURE(rc))
574	return rc;
575	}
576
577	#ifdef VBOX_WITH_PCI_PASSTHROUGH
578	PciRawR0TermVM(pGVM);
579	#endif
580
581	/*
582	* Tell GVMM what we're up to and check that we only do this once.
583	*/
584	if (GVMMR0DoingTermVM(pGVM))
585	{
586	GIMR0TermVM(pGVM);
587
588	/** @todo I wish to call PGMR0PhysFlushHandyPages(pGVM, &pGVM->aCpus[idCpu])
589	* here to make sure we don't leak any shared pages if we crash... */
590	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
591	PGMR0DynMapTermVM(pGVM);
592	#endif
593	HMR0TermVM(pGVM);
594	}
595
596	/*
597	* Deregister the logger.
598	*/
599	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pGVM->pSession);
600	return VINF_SUCCESS;
601	}
602
603
604	/**
605	* An interrupt or unhalt force flag is set, deal with it.
606	*
607	* @returns VINF_SUCCESS (or VINF_EM_HALT).
608	* @param pVCpu The cross context virtual CPU structure.
609	* @param uMWait Result from EMMonitorWaitIsActive().
610	* @param enmInterruptibility Guest CPU interruptbility level.
611	*/
612	static int vmmR0DoHaltInterrupt(PVMCPUCC pVCpu, unsigned uMWait, CPUMINTERRUPTIBILITY enmInterruptibility)
613	{
614	Assert(!TRPMHasTrap(pVCpu));
615	Assert( enmInterruptibility > CPUMINTERRUPTIBILITY_INVALID
616	&& enmInterruptibility < CPUMINTERRUPTIBILITY_END);
617
618	/*
619	* Pending interrupts w/o any SMIs or NMIs? That the usual case.
620	*/
621	if ( VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)
622	&& !VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI \| VMCPU_FF_INTERRUPT_NMI))
623	{
624	if (enmInterruptibility <= CPUMINTERRUPTIBILITY_UNRESTRAINED)
625	{
626	uint8_t u8Interrupt = 0;
627	int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
628	Log(("vmmR0DoHaltInterrupt: CPU%d u8Interrupt=%d (%#x) rc=%Rrc\n", pVCpu->idCpu, u8Interrupt, u8Interrupt, rc));
629	if (RT_SUCCESS(rc))
630	{
631	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_UNHALT);
632
633	rc = TRPMAssertTrap(pVCpu, u8Interrupt, TRPM_HARDWARE_INT);
634	AssertRCSuccess(rc);
635	STAM_REL_COUNTER_INC(&pVCpu->vmm.s.StatR0HaltExec);
636	return rc;
637	}
638	}
639	}
640	/*
641	* SMI is not implemented yet, at least not here.
642	*/
643	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_SMI))
644	{
645	Log12(("vmmR0DoHaltInterrupt: CPU%d failed #3\n", pVCpu->idCpu));
646	STAM_REL_COUNTER_INC(&pVCpu->vmm.s.StatR0HaltToR3);
647	return VINF_EM_HALT;
648	}
649	/*
650	* NMI.
651	*/
652	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI))
653	{
654	if (enmInterruptibility < CPUMINTERRUPTIBILITY_NMI_INHIBIT)
655	{
656	/** @todo later. */
657	Log12(("vmmR0DoHaltInterrupt: CPU%d failed #2 (uMWait=%u enmInt=%d)\n", pVCpu->idCpu, uMWait, enmInterruptibility));
658	STAM_REL_COUNTER_INC(&pVCpu->vmm.s.StatR0HaltToR3);
659	return VINF_EM_HALT;
660	}
661	}
662	/*
663	* Nested-guest virtual interrupt.
664	*/
665	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_NESTED_GUEST))
666	{
667	if (enmInterruptibility < CPUMINTERRUPTIBILITY_VIRT_INT_DISABLED)
668	{
669	/** @todo NSTVMX: NSTSVM: Remember, we might have to check and perform VM-exits
670	* here before injecting the virtual interrupt. See emR3ForcedActions
671	* for details. */
672	Log12(("vmmR0DoHaltInterrupt: CPU%d failed #1 (uMWait=%u enmInt=%d)\n", pVCpu->idCpu, uMWait, enmInterruptibility));
673	STAM_REL_COUNTER_INC(&pVCpu->vmm.s.StatR0HaltToR3);
674	return VINF_EM_HALT;
675	}
676	}
677
678	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_UNHALT))
679	{
680	STAM_REL_COUNTER_INC(&pVCpu->vmm.s.StatR0HaltExec);
681	Log11(("vmmR0DoHaltInterrupt: CPU%d success VINF_SUCCESS (UNHALT)\n", pVCpu->idCpu));
682	return VINF_SUCCESS;
683	}
684	if (uMWait > 1)
685	{
686	STAM_REL_COUNTER_INC(&pVCpu->vmm.s.StatR0HaltExec);
687	Log11(("vmmR0DoHaltInterrupt: CPU%d success VINF_SUCCESS (uMWait=%u > 1)\n", pVCpu->idCpu, uMWait));
688	return VINF_SUCCESS;
689	}
690
691	Log12(("vmmR0DoHaltInterrupt: CPU%d failed #0 (uMWait=%u enmInt=%d)\n", pVCpu->idCpu, uMWait, enmInterruptibility));
692	STAM_REL_COUNTER_INC(&pVCpu->vmm.s.StatR0HaltToR3);
693	return VINF_EM_HALT;
694	}
695
696
697	/**
698	* This does one round of vmR3HaltGlobal1Halt().
699	*
700	* The rational here is that we'll reduce latency in interrupt situations if we
701	* don't go to ring-3 immediately on a VINF_EM_HALT (guest executed HLT or
702	* MWAIT), but do one round of blocking here instead and hope the interrupt is
703	* raised in the meanwhile.
704	*
705	* If we go to ring-3 we'll quit the inner HM/NEM loop in EM and end up in the
706	* outer loop, which will then call VMR3WaitHalted() and that in turn will do a
707	* ring-0 call (unless we're too close to a timer event). When the interrupt
708	* wakes us up, we'll return from ring-0 and EM will by instinct do a
709	* rescheduling (because of raw-mode) before it resumes the HM/NEM loop and gets
710	* back to VMMR0EntryFast().
711	*
712	* @returns VINF_SUCCESS or VINF_EM_HALT.
713	* @param pGVM The ring-0 VM structure.
714	* @param pGVCpu The ring-0 virtual CPU structure.
715	*
716	* @todo r=bird: All the blocking/waiting and EMT managment should move out of
717	* the VM module, probably to VMM. Then this would be more weird wrt
718	* parameters and statistics.
719	*/
720	static int vmmR0DoHalt(PGVM pGVM, PGVMCPU pGVCpu)
721	{
722	/*
723	* Do spin stat historization.
724	*/
725	if (++pGVCpu->vmm.s.cR0Halts & 0xff)
726	{ /* likely */ }
727	else if (pGVCpu->vmm.s.cR0HaltsSucceeded > pGVCpu->vmm.s.cR0HaltsToRing3)
728	{
729	pGVCpu->vmm.s.cR0HaltsSucceeded = 2;
730	pGVCpu->vmm.s.cR0HaltsToRing3 = 0;
731	}
732	else
733	{
734	pGVCpu->vmm.s.cR0HaltsSucceeded = 0;
735	pGVCpu->vmm.s.cR0HaltsToRing3 = 2;
736	}
737
738	/*
739	* Flags that makes us go to ring-3.
740	*/
741	uint32_t const fVmFFs = VM_FF_TM_VIRTUAL_SYNC \| VM_FF_PDM_QUEUES \| VM_FF_PDM_DMA
742	\| VM_FF_DBGF \| VM_FF_REQUEST \| VM_FF_CHECK_VM_STATE
743	\| VM_FF_RESET \| VM_FF_EMT_RENDEZVOUS \| VM_FF_PGM_NEED_HANDY_PAGES
744	\| VM_FF_PGM_NO_MEMORY \| VM_FF_DEBUG_SUSPEND;
745	uint64_t const fCpuFFs = VMCPU_FF_TIMER \| VMCPU_FF_PDM_CRITSECT \| VMCPU_FF_IEM
746	\| VMCPU_FF_REQUEST \| VMCPU_FF_DBGF \| VMCPU_FF_HM_UPDATE_CR3
747	\| VMCPU_FF_HM_UPDATE_PAE_PDPES \| VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL
748	\| VMCPU_FF_TO_R3 \| VMCPU_FF_IOM;
749
750	/*
751	* Check preconditions.
752	*/
753	unsigned const uMWait = EMMonitorWaitIsActive(pGVCpu);
754	CPUMINTERRUPTIBILITY const enmInterruptibility = CPUMGetGuestInterruptibility(pGVCpu);
755	if ( pGVCpu->vmm.s.fMayHaltInRing0
756	&& !TRPMHasTrap(pGVCpu)
757	&& ( enmInterruptibility == CPUMINTERRUPTIBILITY_UNRESTRAINED
758	\|\| uMWait > 1))
759	{
760	if ( !VM_FF_IS_ANY_SET(pGVM, fVmFFs)
761	&& !VMCPU_FF_IS_ANY_SET(pGVCpu, fCpuFFs))
762	{
763	/*
764	* Interrupts pending already?
765	*/
766	if (VMCPU_FF_TEST_AND_CLEAR(pGVCpu, VMCPU_FF_UPDATE_APIC))
767	APICUpdatePendingInterrupts(pGVCpu);
768
769	/*
770	* Flags that wake up from the halted state.
771	*/
772	uint64_t const fIntMask = VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC \| VMCPU_FF_INTERRUPT_NESTED_GUEST
773	\| VMCPU_FF_INTERRUPT_NMI \| VMCPU_FF_INTERRUPT_SMI \| VMCPU_FF_UNHALT;
774
775	if (VMCPU_FF_IS_ANY_SET(pGVCpu, fIntMask))
776	return vmmR0DoHaltInterrupt(pGVCpu, uMWait, enmInterruptibility);
777	ASMNopPause();
778
779	/*
780	* Check out how long till the next timer event.
781	*/
782	uint64_t u64Delta;
783	uint64_t u64GipTime = TMTimerPollGIP(pGVM, pGVCpu, &u64Delta);
784
785	if ( !VM_FF_IS_ANY_SET(pGVM, fVmFFs)
786	&& !VMCPU_FF_IS_ANY_SET(pGVCpu, fCpuFFs))
787	{
788	if (VMCPU_FF_TEST_AND_CLEAR(pGVCpu, VMCPU_FF_UPDATE_APIC))
789	APICUpdatePendingInterrupts(pGVCpu);
790
791	if (VMCPU_FF_IS_ANY_SET(pGVCpu, fIntMask))
792	return vmmR0DoHaltInterrupt(pGVCpu, uMWait, enmInterruptibility);
793
794	/*
795	* Wait if there is enough time to the next timer event.
796	*/
797	if (u64Delta >= pGVCpu->vmm.s.cNsSpinBlockThreshold)
798	{
799	/* If there are few other CPU cores around, we will procrastinate a
800	little before going to sleep, hoping for some device raising an
801	interrupt or similar. Though, the best thing here would be to
802	dynamically adjust the spin count according to its usfulness or
803	something... */
804	if ( pGVCpu->vmm.s.cR0HaltsSucceeded > pGVCpu->vmm.s.cR0HaltsToRing3
805	&& RTMpGetOnlineCount() >= 4)
806	{
807	/** @todo Figure out how we can skip this if it hasn't help recently...
808	* @bugref{9172#c12} */
809	uint32_t cSpinLoops = 42;
810	while (cSpinLoops-- > 0)
811	{
812	ASMNopPause();
813	if (VMCPU_FF_TEST_AND_CLEAR(pGVCpu, VMCPU_FF_UPDATE_APIC))
814	APICUpdatePendingInterrupts(pGVCpu);
815	ASMNopPause();
816	if (VM_FF_IS_ANY_SET(pGVM, fVmFFs))
817	{
818	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3FromSpin);
819	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3);
820	return VINF_EM_HALT;
821	}
822	ASMNopPause();
823	if (VMCPU_FF_IS_ANY_SET(pGVCpu, fCpuFFs))
824	{
825	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3FromSpin);
826	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3);
827	return VINF_EM_HALT;
828	}
829	ASMNopPause();
830	if (VMCPU_FF_IS_ANY_SET(pGVCpu, fIntMask))
831	{
832	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltExecFromSpin);
833	return vmmR0DoHaltInterrupt(pGVCpu, uMWait, enmInterruptibility);
834	}
835	ASMNopPause();
836	}
837	}
838
839	/*
840	* We have to set the state to VMCPUSTATE_STARTED_HALTED here so ring-3
841	* knows when to notify us (cannot access VMINTUSERPERVMCPU::fWait from here).
842	* After changing the state we must recheck the force flags of course.
843	*/
844	if (VMCPU_CMPXCHG_STATE(pGVCpu, VMCPUSTATE_STARTED_HALTED, VMCPUSTATE_STARTED))
845	{
846	if ( !VM_FF_IS_ANY_SET(pGVM, fVmFFs)
847	&& !VMCPU_FF_IS_ANY_SET(pGVCpu, fCpuFFs))
848	{
849	if (VMCPU_FF_TEST_AND_CLEAR(pGVCpu, VMCPU_FF_UPDATE_APIC))
850	APICUpdatePendingInterrupts(pGVCpu);
851
852	if (VMCPU_FF_IS_ANY_SET(pGVCpu, fIntMask))
853	{
854	VMCPU_CMPXCHG_STATE(pGVCpu, VMCPUSTATE_STARTED, VMCPUSTATE_STARTED_HALTED);
855	return vmmR0DoHaltInterrupt(pGVCpu, uMWait, enmInterruptibility);
856	}
857
858	/* Okay, block! */
859	uint64_t const u64StartSchedHalt = RTTimeNanoTS();
860	int rc = GVMMR0SchedHalt(pGVM, pGVCpu, u64GipTime);
861	uint64_t const u64EndSchedHalt = RTTimeNanoTS();
862	uint64_t const cNsElapsedSchedHalt = u64EndSchedHalt - u64StartSchedHalt;
863	Log10(("vmmR0DoHalt: CPU%d: halted %llu ns\n", pGVCpu->idCpu, cNsElapsedSchedHalt));
864
865	VMCPU_CMPXCHG_STATE(pGVCpu, VMCPUSTATE_STARTED, VMCPUSTATE_STARTED_HALTED);
866	STAM_REL_PROFILE_ADD_PERIOD(&pGVCpu->vmm.s.StatR0HaltBlock, cNsElapsedSchedHalt);
867	if ( rc == VINF_SUCCESS
868	\|\| rc == VERR_INTERRUPTED)
869	{
870	/* Keep some stats like ring-3 does. */
871	int64_t const cNsOverslept = u64EndSchedHalt - u64GipTime;
872	if (cNsOverslept > 50000)
873	STAM_REL_PROFILE_ADD_PERIOD(&pGVCpu->vmm.s.StatR0HaltBlockOverslept, cNsOverslept);
874	else if (cNsOverslept < -50000)
875	STAM_REL_PROFILE_ADD_PERIOD(&pGVCpu->vmm.s.StatR0HaltBlockInsomnia, cNsElapsedSchedHalt);
876	else
877	STAM_REL_PROFILE_ADD_PERIOD(&pGVCpu->vmm.s.StatR0HaltBlockOnTime, cNsElapsedSchedHalt);
878
879	/*
880	* Recheck whether we can resume execution or have to go to ring-3.
881	*/
882	if ( !VM_FF_IS_ANY_SET(pGVM, fVmFFs)
883	&& !VMCPU_FF_IS_ANY_SET(pGVCpu, fCpuFFs))
884	{
885	if (VMCPU_FF_TEST_AND_CLEAR(pGVCpu, VMCPU_FF_UPDATE_APIC))
886	APICUpdatePendingInterrupts(pGVCpu);
887	if (VMCPU_FF_IS_ANY_SET(pGVCpu, fIntMask))
888	{
889	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltExecFromBlock);
890	return vmmR0DoHaltInterrupt(pGVCpu, uMWait, enmInterruptibility);
891	}
892	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3PostNoInt);
893	Log12(("vmmR0DoHalt: CPU%d post #2 - No pending interrupt\n", pGVCpu->idCpu));
894	}
895	else
896	{
897	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3PostPendingFF);
898	Log12(("vmmR0DoHalt: CPU%d post #1 - Pending FF\n", pGVCpu->idCpu));
899	}
900	}
901	else
902	{
903	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3Other);
904	Log12(("vmmR0DoHalt: CPU%d GVMMR0SchedHalt failed: %Rrc\n", pGVCpu->idCpu, rc));
905	}
906	}
907	else
908	{
909	VMCPU_CMPXCHG_STATE(pGVCpu, VMCPUSTATE_STARTED, VMCPUSTATE_STARTED_HALTED);
910	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3PendingFF);
911	Log12(("vmmR0DoHalt: CPU%d failed #5 - Pending FF\n", pGVCpu->idCpu));
912	}
913	}
914	else
915	{
916	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3Other);
917	Log12(("vmmR0DoHalt: CPU%d failed #4 - enmState=%d\n", pGVCpu->idCpu, VMCPU_GET_STATE(pGVCpu)));
918	}
919	}
920	else
921	{
922	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3SmallDelta);
923	Log12(("vmmR0DoHalt: CPU%d failed #3 - delta too small: %RU64\n", pGVCpu->idCpu, u64Delta));
924	}
925	}
926	else
927	{
928	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3PendingFF);
929	Log12(("vmmR0DoHalt: CPU%d failed #2 - Pending FF\n", pGVCpu->idCpu));
930	}
931	}
932	else
933	{
934	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3PendingFF);
935	Log12(("vmmR0DoHalt: CPU%d failed #1 - Pending FF\n", pGVCpu->idCpu));
936	}
937	}
938	else
939	{
940	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3Other);
941	Log12(("vmmR0DoHalt: CPU%d failed #0 - fMayHaltInRing0=%d TRPMHasTrap=%d enmInt=%d uMWait=%u\n",
942	pGVCpu->idCpu, pGVCpu->vmm.s.fMayHaltInRing0, TRPMHasTrap(pGVCpu), enmInterruptibility, uMWait));
943	}
944
945	STAM_REL_COUNTER_INC(&pGVCpu->vmm.s.StatR0HaltToR3);
946	return VINF_EM_HALT;
947	}
948
949
950	/**
951	* VMM ring-0 thread-context callback.
952	*
953	* This does common HM state updating and calls the HM-specific thread-context
954	* callback.
955	*
956	* @param enmEvent The thread-context event.
957	* @param pvUser Opaque pointer to the VMCPU.
958	*
959	* @thread EMT(pvUser)
960	*/
961	static DECLCALLBACK(void) vmmR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, void *pvUser)
962	{
963	PVMCPUCC pVCpu = (PVMCPUCC)pvUser;
964
965	switch (enmEvent)
966	{
967	case RTTHREADCTXEVENT_IN:
968	{
969	/*
970	* Linux may call us with preemption enabled (really!) but technically we
971	* cannot get preempted here, otherwise we end up in an infinite recursion
972	* scenario (i.e. preempted in resume hook -> preempt hook -> resume hook...
973	* ad infinitum). Let's just disable preemption for now...
974	*/
975	/** @todo r=bird: I don't believe the above. The linux code is clearly enabling
976	* preemption after doing the callout (one or two functions up the
977	* call chain). */
978	/** @todo r=ramshankar: See @bugref{5313#c30}. */
979	RTTHREADPREEMPTSTATE ParanoidPreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
980	RTThreadPreemptDisable(&ParanoidPreemptState);
981
982	/* We need to update the VCPU <-> host CPU mapping. */
983	RTCPUID idHostCpu;
984	uint32_t iHostCpuSet = RTMpCurSetIndexAndId(&idHostCpu);
985	pVCpu->iHostCpuSet = iHostCpuSet;
986	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
987
988	/* In the very unlikely event that the GIP delta for the CPU we're
989	rescheduled needs calculating, try force a return to ring-3.
990	We unfortunately cannot do the measurements right here. */
991	if (RT_UNLIKELY(SUPIsTscDeltaAvailableForCpuSetIndex(iHostCpuSet)))
992	VMCPU_FF_SET(pVCpu, VMCPU_FF_TO_R3);
993
994	/* Invoke the HM-specific thread-context callback. */
995	HMR0ThreadCtxCallback(enmEvent, pvUser);
996
997	/* Restore preemption. */
998	RTThreadPreemptRestore(&ParanoidPreemptState);
999	break;
1000	}
1001
1002	case RTTHREADCTXEVENT_OUT:
1003	{
1004	/* Invoke the HM-specific thread-context callback. */
1005	HMR0ThreadCtxCallback(enmEvent, pvUser);
1006
1007	/*
1008	* Sigh. See VMMGetCpu() used by VMCPU_ASSERT_EMT(). We cannot let several VCPUs
1009	* have the same host CPU associated with it.
1010	*/
1011	pVCpu->iHostCpuSet = UINT32_MAX;
1012	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
1013	break;
1014	}
1015
1016	default:
1017	/* Invoke the HM-specific thread-context callback. */
1018	HMR0ThreadCtxCallback(enmEvent, pvUser);
1019	break;
1020	}
1021	}
1022
1023
1024	/**
1025	* Creates thread switching hook for the current EMT thread.
1026	*
1027	* This is called by GVMMR0CreateVM and GVMMR0RegisterVCpu. If the host
1028	* platform does not implement switcher hooks, no hooks will be create and the
1029	* member set to NIL_RTTHREADCTXHOOK.
1030	*
1031	* @returns VBox status code.
1032	* @param pVCpu The cross context virtual CPU structure.
1033	* @thread EMT(pVCpu)
1034	*/
1035	VMMR0_INT_DECL(int) VMMR0ThreadCtxHookCreateForEmt(PVMCPUCC pVCpu)
1036	{
1037	VMCPU_ASSERT_EMT(pVCpu);
1038	Assert(pVCpu->vmm.s.hCtxHook == NIL_RTTHREADCTXHOOK);
1039
1040	#if 1 /* To disable this stuff change to zero. */
1041	int rc = RTThreadCtxHookCreate(&pVCpu->vmm.s.hCtxHook, 0, vmmR0ThreadCtxCallback, pVCpu);
1042	if (RT_SUCCESS(rc))
1043	return rc;
1044	#else
1045	RT_NOREF(vmmR0ThreadCtxCallback);
1046	int rc = VERR_NOT_SUPPORTED;
1047	#endif
1048
1049	pVCpu->vmm.s.hCtxHook = NIL_RTTHREADCTXHOOK;
1050	if (rc == VERR_NOT_SUPPORTED)
1051	return VINF_SUCCESS;
1052
1053	LogRelMax(32, ("RTThreadCtxHookCreate failed! rc=%Rrc pVCpu=%p idCpu=%RU32\n", rc, pVCpu, pVCpu->idCpu));
1054	return VINF_SUCCESS; /* Just ignore it, we can live without context hooks. */
1055	}
1056
1057
1058	/**
1059	* Destroys the thread switching hook for the specified VCPU.
1060	*
1061	* @param pVCpu The cross context virtual CPU structure.
1062	* @remarks Can be called from any thread.
1063	*/
1064	VMMR0_INT_DECL(void) VMMR0ThreadCtxHookDestroyForEmt(PVMCPUCC pVCpu)
1065	{
1066	int rc = RTThreadCtxHookDestroy(pVCpu->vmm.s.hCtxHook);
1067	AssertRC(rc);
1068	pVCpu->vmm.s.hCtxHook = NIL_RTTHREADCTXHOOK;
1069	}
1070
1071
1072	/**
1073	* Disables the thread switching hook for this VCPU (if we got one).
1074	*
1075	* @param pVCpu The cross context virtual CPU structure.
1076	* @thread EMT(pVCpu)
1077	*
1078	* @remarks This also clears VMCPU::idHostCpu, so the mapping is invalid after
1079	* this call. This means you have to be careful with what you do!
1080	*/
1081	VMMR0_INT_DECL(void) VMMR0ThreadCtxHookDisable(PVMCPUCC pVCpu)
1082	{
1083	/*
1084	* Clear the VCPU <-> host CPU mapping as we've left HM context.
1085	* @bugref{7726#c19} explains the need for this trick:
1086	*
1087	* VMXR0CallRing3Callback/SVMR0CallRing3Callback &
1088	* hmR0VmxLeaveSession/hmR0SvmLeaveSession disables context hooks during
1089	* longjmp & normal return to ring-3, which opens a window where we may be
1090	* rescheduled without changing VMCPUID::idHostCpu and cause confusion if
1091	* the CPU starts executing a different EMT. Both functions first disables
1092	* preemption and then calls HMR0LeaveCpu which invalids idHostCpu, leaving
1093	* an opening for getting preempted.
1094	*/
1095	/** @todo Make HM not need this API! Then we could leave the hooks enabled
1096	* all the time. */
1097	/** @todo move this into the context hook disabling if(). */
1098	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
1099
1100	/*
1101	* Disable the context hook, if we got one.
1102	*/
1103	if (pVCpu->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
1104	{
1105	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1106	int rc = RTThreadCtxHookDisable(pVCpu->vmm.s.hCtxHook);
1107	AssertRC(rc);
1108	}
1109	}
1110
1111
1112	/**
1113	* Internal version of VMMR0ThreadCtxHooksAreRegistered.
1114	*
1115	* @returns true if registered, false otherwise.
1116	* @param pVCpu The cross context virtual CPU structure.
1117	*/
1118	DECLINLINE(bool) vmmR0ThreadCtxHookIsEnabled(PVMCPUCC pVCpu)
1119	{
1120	return RTThreadCtxHookIsEnabled(pVCpu->vmm.s.hCtxHook);
1121	}
1122
1123
1124	/**
1125	* Whether thread-context hooks are registered for this VCPU.
1126	*
1127	* @returns true if registered, false otherwise.
1128	* @param pVCpu The cross context virtual CPU structure.
1129	*/
1130	VMMR0_INT_DECL(bool) VMMR0ThreadCtxHookIsEnabled(PVMCPUCC pVCpu)
1131	{
1132	return vmmR0ThreadCtxHookIsEnabled(pVCpu);
1133	}
1134
1135
1136	/**
1137	* Returns the ring-0 release logger instance.
1138	*
1139	* @returns Pointer to release logger, NULL if not configured.
1140	* @param pVCpu The cross context virtual CPU structure of the caller.
1141	* @thread EMT(pVCpu)
1142	*/
1143	VMMR0_INT_DECL(PRTLOGGER) VMMR0GetReleaseLogger(PVMCPUCC pVCpu)
1144	{
1145	PVMMR0LOGGER pLogger = pVCpu->vmm.s.pR0RelLoggerR0;
1146	if (pLogger)
1147	return &pLogger->Logger;
1148	return NULL;
1149	}
1150
1151
1152	#ifdef VBOX_WITH_STATISTICS
1153	/**
1154	* Record return code statistics
1155	* @param pVM The cross context VM structure.
1156	* @param pVCpu The cross context virtual CPU structure.
1157	* @param rc The status code.
1158	*/
1159	static void vmmR0RecordRC(PVMCC pVM, PVMCPUCC pVCpu, int rc)
1160	{
1161	/*
1162	* Collect statistics.
1163	*/
1164	switch (rc)
1165	{
1166	case VINF_SUCCESS:
1167	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
1168	break;
1169	case VINF_EM_RAW_INTERRUPT:
1170	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
1171	break;
1172	case VINF_EM_RAW_INTERRUPT_HYPER:
1173	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
1174	break;
1175	case VINF_EM_RAW_GUEST_TRAP:
1176	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
1177	break;
1178	case VINF_EM_RAW_RING_SWITCH:
1179	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
1180	break;
1181	case VINF_EM_RAW_RING_SWITCH_INT:
1182	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
1183	break;
1184	case VINF_EM_RAW_STALE_SELECTOR:
1185	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
1186	break;
1187	case VINF_EM_RAW_IRET_TRAP:
1188	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
1189	break;
1190	case VINF_IOM_R3_IOPORT_READ:
1191	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
1192	break;
1193	case VINF_IOM_R3_IOPORT_WRITE:
1194	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
1195	break;
1196	case VINF_IOM_R3_IOPORT_COMMIT_WRITE:
1197	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOCommitWrite);
1198	break;
1199	case VINF_IOM_R3_MMIO_READ:
1200	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
1201	break;
1202	case VINF_IOM_R3_MMIO_WRITE:
1203	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
1204	break;
1205	case VINF_IOM_R3_MMIO_COMMIT_WRITE:
1206	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOCommitWrite);
1207	break;
1208	case VINF_IOM_R3_MMIO_READ_WRITE:
1209	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
1210	break;
1211	case VINF_PATM_HC_MMIO_PATCH_READ:
1212	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
1213	break;
1214	case VINF_PATM_HC_MMIO_PATCH_WRITE:
1215	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
1216	break;
1217	case VINF_CPUM_R3_MSR_READ:
1218	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMSRRead);
1219	break;
1220	case VINF_CPUM_R3_MSR_WRITE:
1221	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMSRWrite);
1222	break;
1223	case VINF_EM_RAW_EMULATE_INSTR:
1224	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
1225	break;
1226	case VINF_PATCH_EMULATE_INSTR:
1227	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
1228	break;
1229	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
1230	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
1231	break;
1232	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
1233	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
1234	break;
1235	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
1236	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
1237	break;
1238	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
1239	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
1240	break;
1241	case VINF_CSAM_PENDING_ACTION:
1242	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
1243	break;
1244	case VINF_PGM_SYNC_CR3:
1245	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
1246	break;
1247	case VINF_PATM_PATCH_INT3:
1248	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
1249	break;
1250	case VINF_PATM_PATCH_TRAP_PF:
1251	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
1252	break;
1253	case VINF_PATM_PATCH_TRAP_GP:
1254	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
1255	break;
1256	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
1257	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
1258	break;
1259	case VINF_EM_RESCHEDULE_REM:
1260	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
1261	break;
1262	case VINF_EM_RAW_TO_R3:
1263	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Total);
1264	if (VM_FF_IS_SET(pVM, VM_FF_TM_VIRTUAL_SYNC))
1265	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3TMVirt);
1266	else if (VM_FF_IS_SET(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
1267	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3HandyPages);
1268	else if (VM_FF_IS_SET(pVM, VM_FF_PDM_QUEUES))
1269	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3PDMQueues);
1270	else if (VM_FF_IS_SET(pVM, VM_FF_EMT_RENDEZVOUS))
1271	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Rendezvous);
1272	else if (VM_FF_IS_SET(pVM, VM_FF_PDM_DMA))
1273	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3DMA);
1274	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_TIMER))
1275	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Timer);
1276	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PDM_CRITSECT))
1277	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3CritSect);
1278	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_TO_R3))
1279	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3FF);
1280	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_IEM))
1281	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Iem);
1282	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_IOM))
1283	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Iom);
1284	else
1285	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Unknown);
1286	break;
1287
1288	case VINF_EM_RAW_TIMER_PENDING:
1289	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
1290	break;
1291	case VINF_EM_RAW_INTERRUPT_PENDING:
1292	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
1293	break;
1294	case VINF_VMM_CALL_HOST:
1295	switch (pVCpu->vmm.s.enmCallRing3Operation)
1296	{
1297	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
1298	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMCritSectEnter);
1299	break;
1300	case VMMCALLRING3_PDM_LOCK:
1301	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
1302	break;
1303	case VMMCALLRING3_PGM_POOL_GROW:
1304	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
1305	break;
1306	case VMMCALLRING3_PGM_LOCK:
1307	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
1308	break;
1309	case VMMCALLRING3_PGM_MAP_CHUNK:
1310	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
1311	break;
1312	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
1313	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
1314	break;
1315	case VMMCALLRING3_VMM_LOGGER_FLUSH:
1316	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
1317	break;
1318	case VMMCALLRING3_VM_SET_ERROR:
1319	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
1320	break;
1321	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
1322	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
1323	break;
1324	case VMMCALLRING3_VM_R0_ASSERTION:
1325	default:
1326	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
1327	break;
1328	}
1329	break;
1330	case VINF_PATM_DUPLICATE_FUNCTION:
1331	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
1332	break;
1333	case VINF_PGM_CHANGE_MODE:
1334	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
1335	break;
1336	case VINF_PGM_POOL_FLUSH_PENDING:
1337	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMFlushPending);
1338	break;
1339	case VINF_EM_PENDING_REQUEST:
1340	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
1341	break;
1342	case VINF_EM_HM_PATCH_TPR_INSTR:
1343	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchTPR);
1344	break;
1345	default:
1346	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
1347	break;
1348	}
1349	}
1350	#endif /* VBOX_WITH_STATISTICS */
1351
1352
1353	/**
1354	* The Ring 0 entry point, called by the fast-ioctl path.
1355	*
1356	* @param pGVM The global (ring-0) VM structure.
1357	* @param pVMIgnored The cross context VM structure. The return code is
1358	* stored in pVM->vmm.s.iLastGZRc.
1359	* @param idCpu The Virtual CPU ID of the calling EMT.
1360	* @param enmOperation Which operation to execute.
1361	* @remarks Assume called with interrupts _enabled_.
1362	*/
1363	VMMR0DECL(void) VMMR0EntryFast(PGVM pGVM, PVMCC pVMIgnored, VMCPUID idCpu, VMMR0OPERATION enmOperation)
1364	{
1365	RT_NOREF(pVMIgnored);
1366
1367	/*
1368	* Validation.
1369	*/
1370	if ( idCpu < pGVM->cCpus
1371	&& pGVM->cCpus == pGVM->cCpusUnsafe)
1372	{ /likely/ }
1373	else
1374	{
1375	SUPR0Printf("VMMR0EntryFast: Bad idCpu=%#x cCpus=%#x cCpusUnsafe=%#x\n", idCpu, pGVM->cCpus, pGVM->cCpusUnsafe);
1376	return;
1377	}
1378
1379	PGVMCPU pGVCpu = &pGVM->aCpus[idCpu];
1380	RTNATIVETHREAD const hNativeThread = RTThreadNativeSelf();
1381	if (RT_LIKELY( pGVCpu->hEMT == hNativeThread
1382	&& pGVCpu->hNativeThreadR0 == hNativeThread))
1383	{ /* likely */ }
1384	else
1385	{
1386	SUPR0Printf("VMMR0EntryFast: Bad thread idCpu=%#x hNativeSelf=%p pGVCpu->hEmt=%p pGVCpu->hNativeThreadR0=%p\n",
1387	idCpu, hNativeThread, pGVCpu->hEMT, pGVCpu->hNativeThreadR0);
1388	return;
1389	}
1390
1391	/*
1392	* SMAP fun.
1393	*/
1394	VMM_CHECK_SMAP_SETUP();
1395	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1396
1397	/*
1398	* Perform requested operation.
1399	*/
1400	switch (enmOperation)
1401	{
1402	/*
1403	* Run guest code using the available hardware acceleration technology.
1404	*/
1405	case VMMR0_DO_HM_RUN:
1406	{
1407	for (;;) /* hlt loop */
1408	{
1409	/*
1410	* Disable preemption.
1411	*/
1412	Assert(!vmmR0ThreadCtxHookIsEnabled(pGVCpu));
1413	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
1414	RTThreadPreemptDisable(&PreemptState);
1415
1416	/*
1417	* Get the host CPU identifiers, make sure they are valid and that
1418	* we've got a TSC delta for the CPU.
1419	*/
1420	RTCPUID idHostCpu;
1421	uint32_t iHostCpuSet = RTMpCurSetIndexAndId(&idHostCpu);
1422	if (RT_LIKELY( iHostCpuSet < RTCPUSET_MAX_CPUS
1423	&& SUPIsTscDeltaAvailableForCpuSetIndex(iHostCpuSet)))
1424	{
1425	pGVCpu->iHostCpuSet = iHostCpuSet;
1426	ASMAtomicWriteU32(&pGVCpu->idHostCpu, idHostCpu);
1427
1428	/*
1429	* Update the periodic preemption timer if it's active.
1430	*/
1431	if (pGVM->vmm.s.fUsePeriodicPreemptionTimers)
1432	GVMMR0SchedUpdatePeriodicPreemptionTimer(pGVM, pGVCpu->idHostCpu, TMCalcHostTimerFrequency(pGVM, pGVCpu));
1433	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1434
1435	#ifdef VMM_R0_TOUCH_FPU
1436	/*
1437	* Make sure we've got the FPU state loaded so and we don't need to clear
1438	* CR0.TS and get out of sync with the host kernel when loading the guest
1439	* FPU state. @ref sec_cpum_fpu (CPUM.cpp) and @bugref{4053}.
1440	*/
1441	CPUMR0TouchHostFpu();
1442	#endif
1443	int rc;
1444	bool fPreemptRestored = false;
1445	if (!HMR0SuspendPending())
1446	{
1447	/*
1448	* Enable the context switching hook.
1449	*/
1450	if (pGVCpu->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
1451	{
1452	Assert(!RTThreadCtxHookIsEnabled(pGVCpu->vmm.s.hCtxHook));
1453	int rc2 = RTThreadCtxHookEnable(pGVCpu->vmm.s.hCtxHook); AssertRC(rc2);
1454	}
1455
1456	/*
1457	* Enter HM context.
1458	*/
1459	rc = HMR0Enter(pGVCpu);
1460	if (RT_SUCCESS(rc))
1461	{
1462	VMCPU_SET_STATE(pGVCpu, VMCPUSTATE_STARTED_HM);
1463
1464	/*
1465	* When preemption hooks are in place, enable preemption now that
1466	* we're in HM context.
1467	*/
1468	if (vmmR0ThreadCtxHookIsEnabled(pGVCpu))
1469	{
1470	fPreemptRestored = true;
1471	RTThreadPreemptRestore(&PreemptState);
1472	}
1473
1474	/*
1475	* Setup the longjmp machinery and execute guest code (calls HMR0RunGuestCode).
1476	*/
1477	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1478	rc = vmmR0CallRing3SetJmp(&pGVCpu->vmm.s.CallRing3JmpBufR0, HMR0RunGuestCode, pGVM, pGVCpu);
1479	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1480
1481	/*
1482	* Assert sanity on the way out. Using manual assertions code here as normal
1483	* assertions are going to panic the host since we're outside the setjmp/longjmp zone.
1484	*/
1485	if (RT_UNLIKELY( VMCPU_GET_STATE(pGVCpu) != VMCPUSTATE_STARTED_HM
1486	&& RT_SUCCESS_NP(rc)
1487	&& rc != VINF_VMM_CALL_HOST ))
1488	{
1489	pGVM->vmm.s.szRing0AssertMsg1[0] = '\0';
1490	RTStrPrintf(pGVM->vmm.s.szRing0AssertMsg2, sizeof(pGVM->vmm.s.szRing0AssertMsg2),
1491	"Got VMCPU state %d expected %d.\n", VMCPU_GET_STATE(pGVCpu), VMCPUSTATE_STARTED_HM);
1492	rc = VERR_VMM_WRONG_HM_VMCPU_STATE;
1493	}
1494	#if 0
1495	/** @todo Get rid of this. HM shouldn't disable the context hook. */
1496	else if (RT_UNLIKELY(vmmR0ThreadCtxHookIsEnabled(pGVCpu)))
1497	{
1498	pGVM->vmm.s.szRing0AssertMsg1[0] = '\0';
1499	RTStrPrintf(pGVM->vmm.s.szRing0AssertMsg2, sizeof(pGVM->vmm.s.szRing0AssertMsg2),
1500	"Thread-context hooks still enabled! VCPU=%p Id=%u rc=%d.\n", pGVCpu, pGVCpu->idCpu, rc);
1501	rc = VERR_VMM_CONTEXT_HOOK_STILL_ENABLED;
1502	}
1503	#endif
1504
1505	VMCPU_SET_STATE(pGVCpu, VMCPUSTATE_STARTED);
1506	}
1507	STAM_COUNTER_INC(&pGVM->vmm.s.StatRunGC);
1508
1509	/*
1510	* Invalidate the host CPU identifiers before we disable the context
1511	* hook / restore preemption.
1512	*/
1513	pGVCpu->iHostCpuSet = UINT32_MAX;
1514	ASMAtomicWriteU32(&pGVCpu->idHostCpu, NIL_RTCPUID);
1515
1516	/*
1517	* Disable context hooks. Due to unresolved cleanup issues, we
1518	* cannot leave the hooks enabled when we return to ring-3.
1519	*
1520	* Note! At the moment HM may also have disabled the hook
1521	* when we get here, but the IPRT API handles that.
1522	*/
1523	if (pGVCpu->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
1524	{
1525	ASMAtomicWriteU32(&pGVCpu->idHostCpu, NIL_RTCPUID);
1526	RTThreadCtxHookDisable(pGVCpu->vmm.s.hCtxHook);
1527	}
1528	}
1529	/*
1530	* The system is about to go into suspend mode; go back to ring 3.
1531	*/
1532	else
1533	{
1534	rc = VINF_EM_RAW_INTERRUPT;
1535	pGVCpu->iHostCpuSet = UINT32_MAX;
1536	ASMAtomicWriteU32(&pGVCpu->idHostCpu, NIL_RTCPUID);
1537	}
1538
1539	/** @todo When HM stops messing with the context hook state, we'll disable
1540	* preemption again before the RTThreadCtxHookDisable call. */
1541	if (!fPreemptRestored)
1542	RTThreadPreemptRestore(&PreemptState);
1543
1544	pGVCpu->vmm.s.iLastGZRc = rc;
1545
1546	/* Fire dtrace probe and collect statistics. */
1547	VBOXVMM_R0_VMM_RETURN_TO_RING3_HM(pGVCpu, CPUMQueryGuestCtxPtr(pGVCpu), rc);
1548	#ifdef VBOX_WITH_STATISTICS
1549	vmmR0RecordRC(pGVM, pGVCpu, rc);
1550	#endif
1551	/*
1552	* If this is a halt.
1553	*/
1554	if (rc != VINF_EM_HALT)
1555	{ /* we're not in a hurry for a HLT, so prefer this path */ }
1556	else
1557	{
1558	pGVCpu->vmm.s.iLastGZRc = rc = vmmR0DoHalt(pGVM, pGVCpu);
1559	if (rc == VINF_SUCCESS)
1560	{
1561	pGVCpu->vmm.s.cR0HaltsSucceeded++;
1562	continue;
1563	}
1564	pGVCpu->vmm.s.cR0HaltsToRing3++;
1565	}
1566	}
1567	/*
1568	* Invalid CPU set index or TSC delta in need of measuring.
1569	*/
1570	else
1571	{
1572	pGVCpu->iHostCpuSet = UINT32_MAX;
1573	ASMAtomicWriteU32(&pGVCpu->idHostCpu, NIL_RTCPUID);
1574	RTThreadPreemptRestore(&PreemptState);
1575	if (iHostCpuSet < RTCPUSET_MAX_CPUS)
1576	{
1577	int rc = SUPR0TscDeltaMeasureBySetIndex(pGVM->pSession, iHostCpuSet, 0 /fFlags/,
1578	2 /cMsWaitRetry/, 5RT_MS_1SEC /cMsWaitThread*/,
1579	0 /default cTries/);
1580	if (RT_SUCCESS(rc) \|\| rc == VERR_CPU_OFFLINE)
1581	pGVCpu->vmm.s.iLastGZRc = VINF_EM_RAW_TO_R3;
1582	else
1583	pGVCpu->vmm.s.iLastGZRc = rc;
1584	}
1585	else
1586	pGVCpu->vmm.s.iLastGZRc = VERR_INVALID_CPU_INDEX;
1587	}
1588	break;
1589
1590	} /* halt loop. */
1591	break;
1592	}
1593
1594	#ifdef VBOX_WITH_NEM_R0
1595	# if defined(RT_ARCH_AMD64) && defined(RT_OS_WINDOWS)
1596	case VMMR0_DO_NEM_RUN:
1597	{
1598	/*
1599	* Setup the longjmp machinery and execute guest code (calls NEMR0RunGuestCode).
1600	*/
1601	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1602	# ifdef VBOXSTRICTRC_STRICT_ENABLED
1603	int rc = vmmR0CallRing3SetJmp2(&pGVCpu->vmm.s.CallRing3JmpBufR0, (PFNVMMR0SETJMP2)NEMR0RunGuestCode, pGVM, idCpu);
1604	# else
1605	int rc = vmmR0CallRing3SetJmp2(&pGVCpu->vmm.s.CallRing3JmpBufR0, NEMR0RunGuestCode, pGVM, idCpu);
1606	# endif
1607	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1608	STAM_COUNTER_INC(&pGVM->vmm.s.StatRunGC);
1609
1610	pGVCpu->vmm.s.iLastGZRc = rc;
1611
1612	/*
1613	* Fire dtrace probe and collect statistics.
1614	*/
1615	VBOXVMM_R0_VMM_RETURN_TO_RING3_NEM(pGVCpu, CPUMQueryGuestCtxPtr(pGVCpu), rc);
1616	# ifdef VBOX_WITH_STATISTICS
1617	vmmR0RecordRC(pGVM, pGVCpu, rc);
1618	# endif
1619	break;
1620	}
1621	# endif
1622	#endif
1623
1624	/*
1625	* For profiling.
1626	*/
1627	case VMMR0_DO_NOP:
1628	pGVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
1629	break;
1630
1631	/*
1632	* Shouldn't happen.
1633	*/
1634	default:
1635	AssertMsgFailed(("%#x\n", enmOperation));
1636	pGVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
1637	break;
1638	}
1639	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1640	}
1641
1642
1643	/**
1644	* Validates a session or VM session argument.
1645	*
1646	* @returns true / false accordingly.
1647	* @param pGVM The global (ring-0) VM structure.
1648	* @param pClaimedSession The session claim to validate.
1649	* @param pSession The session argument.
1650	*/
1651	DECLINLINE(bool) vmmR0IsValidSession(PGVM pGVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
1652	{
1653	/* This must be set! */
1654	if (!pSession)
1655	return false;
1656
1657	/* Only one out of the two. */
1658	if (pGVM && pClaimedSession)
1659	return false;
1660	if (pGVM)
1661	pClaimedSession = pGVM->pSession;
1662	return pClaimedSession == pSession;
1663	}
1664
1665
1666	/**
1667	* VMMR0EntryEx worker function, either called directly or when ever possible
1668	* called thru a longjmp so we can exit safely on failure.
1669	*
1670	* @returns VBox status code.
1671	* @param pGVM The global (ring-0) VM structure.
1672	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1673	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1674	* @param enmOperation Which operation to execute.
1675	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
1676	* The support driver validates this if it's present.
1677	* @param u64Arg Some simple constant argument.
1678	* @param pSession The session of the caller.
1679	*
1680	* @remarks Assume called with interrupts _enabled_.
1681	*/
1682	DECL_NO_INLINE(static, int) vmmR0EntryExWorker(PGVM pGVM, VMCPUID idCpu, VMMR0OPERATION enmOperation,
1683	PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
1684	{
1685	/*
1686	* Validate pGVM and idCpu for consistency and validity.
1687	*/
1688	if (pGVM != NULL)
1689	{
1690	if (RT_LIKELY(((uintptr_t)pGVM & PAGE_OFFSET_MASK) == 0))
1691	{ /* likely */ }
1692	else
1693	{
1694	SUPR0Printf("vmmR0EntryExWorker: Invalid pGVM=%p! (op=%d)\n", pGVM, enmOperation);
1695	return VERR_INVALID_POINTER;
1696	}
1697
1698	if (RT_LIKELY(idCpu == NIL_VMCPUID \|\| idCpu < pGVM->cCpus))
1699	{ /* likely */ }
1700	else
1701	{
1702	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu %#x (cCpus=%#x)\n", idCpu, pGVM->cCpus);
1703	return VERR_INVALID_PARAMETER;
1704	}
1705
1706	if (RT_LIKELY( pGVM->enmVMState >= VMSTATE_CREATING
1707	&& pGVM->enmVMState <= VMSTATE_TERMINATED
1708	&& pGVM->pSession == pSession
1709	&& pGVM->pSelf == pGVM))
1710	{ /* likely */ }
1711	else
1712	{
1713	SUPR0Printf("vmmR0EntryExWorker: Invalid pGVM=%p:{.enmVMState=%d, .cCpus=%#x, .pSession=%p(==%p), .pSelf=%p(==%p)}! (op=%d)\n",
1714	pGVM, pGVM->enmVMState, pGVM->cCpus, pGVM->pSession, pSession, pGVM->pSelf, pGVM, enmOperation);
1715	return VERR_INVALID_POINTER;
1716	}
1717	}
1718	else if (RT_LIKELY(idCpu == NIL_VMCPUID))
1719	{ /* likely */ }
1720	else
1721	{
1722	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
1723	return VERR_INVALID_PARAMETER;
1724	}
1725
1726	/*
1727	* SMAP fun.
1728	*/
1729	VMM_CHECK_SMAP_SETUP();
1730	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
1731
1732	/*
1733	* Process the request.
1734	*/
1735	int rc;
1736	switch (enmOperation)
1737	{
1738	/*
1739	* GVM requests
1740	*/
1741	case VMMR0_DO_GVMM_CREATE_VM:
1742	if (pGVM == NULL && u64Arg == 0 && idCpu == NIL_VMCPUID)
1743	rc = GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr, pSession);
1744	else
1745	rc = VERR_INVALID_PARAMETER;
1746	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
1747	break;
1748
1749	case VMMR0_DO_GVMM_DESTROY_VM:
1750	if (pReqHdr == NULL && u64Arg == 0)
1751	rc = GVMMR0DestroyVM(pGVM);
1752	else
1753	rc = VERR_INVALID_PARAMETER;
1754	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
1755	break;
1756
1757	case VMMR0_DO_GVMM_REGISTER_VMCPU:
1758	if (pGVM != NULL)
1759	rc = GVMMR0RegisterVCpu(pGVM, idCpu);
1760	else
1761	rc = VERR_INVALID_PARAMETER;
1762	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1763	break;
1764
1765	case VMMR0_DO_GVMM_DEREGISTER_VMCPU:
1766	if (pGVM != NULL)
1767	rc = GVMMR0DeregisterVCpu(pGVM, idCpu);
1768	else
1769	rc = VERR_INVALID_PARAMETER;
1770	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1771	break;
1772
1773	case VMMR0_DO_GVMM_SCHED_HALT:
1774	if (pReqHdr)
1775	return VERR_INVALID_PARAMETER;
1776	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1777	rc = GVMMR0SchedHaltReq(pGVM, idCpu, u64Arg);
1778	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1779	break;
1780
1781	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
1782	if (pReqHdr \|\| u64Arg)
1783	return VERR_INVALID_PARAMETER;
1784	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1785	rc = GVMMR0SchedWakeUp(pGVM, idCpu);
1786	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1787	break;
1788
1789	case VMMR0_DO_GVMM_SCHED_POKE:
1790	if (pReqHdr \|\| u64Arg)
1791	return VERR_INVALID_PARAMETER;
1792	rc = GVMMR0SchedPoke(pGVM, idCpu);
1793	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1794	break;
1795
1796	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
1797	if (u64Arg)
1798	return VERR_INVALID_PARAMETER;
1799	rc = GVMMR0SchedWakeUpAndPokeCpusReq(pGVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
1800	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1801	break;
1802
1803	case VMMR0_DO_GVMM_SCHED_POLL:
1804	if (pReqHdr \|\| u64Arg > 1)
1805	return VERR_INVALID_PARAMETER;
1806	rc = GVMMR0SchedPoll(pGVM, idCpu, !!u64Arg);
1807	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1808	break;
1809
1810	case VMMR0_DO_GVMM_QUERY_STATISTICS:
1811	if (u64Arg)
1812	return VERR_INVALID_PARAMETER;
1813	rc = GVMMR0QueryStatisticsReq(pGVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr, pSession);
1814	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1815	break;
1816
1817	case VMMR0_DO_GVMM_RESET_STATISTICS:
1818	if (u64Arg)
1819	return VERR_INVALID_PARAMETER;
1820	rc = GVMMR0ResetStatisticsReq(pGVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr, pSession);
1821	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1822	break;
1823
1824	/*
1825	* Initialize the R0 part of a VM instance.
1826	*/
1827	case VMMR0_DO_VMMR0_INIT:
1828	rc = vmmR0InitVM(pGVM, RT_LODWORD(u64Arg), RT_HIDWORD(u64Arg));
1829	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1830	break;
1831
1832	/*
1833	* Does EMT specific ring-0 init.
1834	*/
1835	case VMMR0_DO_VMMR0_INIT_EMT:
1836	rc = vmmR0InitVMEmt(pGVM, idCpu);
1837	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1838	break;
1839
1840	/*
1841	* Terminate the R0 part of a VM instance.
1842	*/
1843	case VMMR0_DO_VMMR0_TERM:
1844	rc = VMMR0TermVM(pGVM, 0 /idCpu/);
1845	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1846	break;
1847
1848	/*
1849	* Attempt to enable hm mode and check the current setting.
1850	*/
1851	case VMMR0_DO_HM_ENABLE:
1852	rc = HMR0EnableAllCpus(pGVM);
1853	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1854	break;
1855
1856	/*
1857	* Setup the hardware accelerated session.
1858	*/
1859	case VMMR0_DO_HM_SETUP_VM:
1860	rc = HMR0SetupVM(pGVM);
1861	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1862	break;
1863
1864	/*
1865	* PGM wrappers.
1866	*/
1867	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
1868	if (idCpu == NIL_VMCPUID)
1869	return VERR_INVALID_CPU_ID;
1870	rc = PGMR0PhysAllocateHandyPages(pGVM, idCpu);
1871	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1872	break;
1873
1874	case VMMR0_DO_PGM_FLUSH_HANDY_PAGES:
1875	if (idCpu == NIL_VMCPUID)
1876	return VERR_INVALID_CPU_ID;
1877	rc = PGMR0PhysFlushHandyPages(pGVM, idCpu);
1878	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1879	break;
1880
1881	case VMMR0_DO_PGM_ALLOCATE_LARGE_HANDY_PAGE:
1882	if (idCpu == NIL_VMCPUID)
1883	return VERR_INVALID_CPU_ID;
1884	rc = PGMR0PhysAllocateLargeHandyPage(pGVM, idCpu);
1885	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1886	break;
1887
1888	case VMMR0_DO_PGM_PHYS_SETUP_IOMMU:
1889	if (idCpu != 0)
1890	return VERR_INVALID_CPU_ID;
1891	rc = PGMR0PhysSetupIoMmu(pGVM);
1892	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1893	break;
1894
1895	case VMMR0_DO_PGM_POOL_GROW:
1896	if (idCpu == NIL_VMCPUID)
1897	return VERR_INVALID_CPU_ID;
1898	rc = PGMR0PoolGrow(pGVM);
1899	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1900	break;
1901
1902	/*
1903	* GMM wrappers.
1904	*/
1905	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1906	if (u64Arg)
1907	return VERR_INVALID_PARAMETER;
1908	rc = GMMR0InitialReservationReq(pGVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
1909	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1910	break;
1911
1912	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1913	if (u64Arg)
1914	return VERR_INVALID_PARAMETER;
1915	rc = GMMR0UpdateReservationReq(pGVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
1916	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1917	break;
1918
1919	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1920	if (u64Arg)
1921	return VERR_INVALID_PARAMETER;
1922	rc = GMMR0AllocatePagesReq(pGVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
1923	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1924	break;
1925
1926	case VMMR0_DO_GMM_FREE_PAGES:
1927	if (u64Arg)
1928	return VERR_INVALID_PARAMETER;
1929	rc = GMMR0FreePagesReq(pGVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
1930	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1931	break;
1932
1933	case VMMR0_DO_GMM_FREE_LARGE_PAGE:
1934	if (u64Arg)
1935	return VERR_INVALID_PARAMETER;
1936	rc = GMMR0FreeLargePageReq(pGVM, idCpu, (PGMMFREELARGEPAGEREQ)pReqHdr);
1937	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1938	break;
1939
1940	case VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS:
1941	if (u64Arg)
1942	return VERR_INVALID_PARAMETER;
1943	rc = GMMR0QueryHypervisorMemoryStatsReq((PGMMMEMSTATSREQ)pReqHdr);
1944	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1945	break;
1946
1947	case VMMR0_DO_GMM_QUERY_MEM_STATS:
1948	if (idCpu == NIL_VMCPUID)
1949	return VERR_INVALID_CPU_ID;
1950	if (u64Arg)
1951	return VERR_INVALID_PARAMETER;
1952	rc = GMMR0QueryMemoryStatsReq(pGVM, idCpu, (PGMMMEMSTATSREQ)pReqHdr);
1953	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1954	break;
1955
1956	case VMMR0_DO_GMM_BALLOONED_PAGES:
1957	if (u64Arg)
1958	return VERR_INVALID_PARAMETER;
1959	rc = GMMR0BalloonedPagesReq(pGVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
1960	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1961	break;
1962
1963	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
1964	if (u64Arg)
1965	return VERR_INVALID_PARAMETER;
1966	rc = GMMR0MapUnmapChunkReq(pGVM, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
1967	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1968	break;
1969
1970	case VMMR0_DO_GMM_SEED_CHUNK:
1971	if (pReqHdr)
1972	return VERR_INVALID_PARAMETER;
1973	rc = GMMR0SeedChunk(pGVM, idCpu, (RTR3PTR)u64Arg);
1974	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1975	break;
1976
1977	case VMMR0_DO_GMM_REGISTER_SHARED_MODULE:
1978	if (idCpu == NIL_VMCPUID)
1979	return VERR_INVALID_CPU_ID;
1980	if (u64Arg)
1981	return VERR_INVALID_PARAMETER;
1982	rc = GMMR0RegisterSharedModuleReq(pGVM, idCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
1983	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1984	break;
1985
1986	case VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE:
1987	if (idCpu == NIL_VMCPUID)
1988	return VERR_INVALID_CPU_ID;
1989	if (u64Arg)
1990	return VERR_INVALID_PARAMETER;
1991	rc = GMMR0UnregisterSharedModuleReq(pGVM, idCpu, (PGMMUNREGISTERSHAREDMODULEREQ)pReqHdr);
1992	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
1993	break;
1994
1995	case VMMR0_DO_GMM_RESET_SHARED_MODULES:
1996	if (idCpu == NIL_VMCPUID)
1997	return VERR_INVALID_CPU_ID;
1998	if ( u64Arg
1999	\|\| pReqHdr)
2000	return VERR_INVALID_PARAMETER;
2001	rc = GMMR0ResetSharedModules(pGVM, idCpu);
2002	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2003	break;
2004
2005	#ifdef VBOX_WITH_PAGE_SHARING
2006	case VMMR0_DO_GMM_CHECK_SHARED_MODULES:
2007	{
2008	if (idCpu == NIL_VMCPUID)
2009	return VERR_INVALID_CPU_ID;
2010	if ( u64Arg
2011	\|\| pReqHdr)
2012	return VERR_INVALID_PARAMETER;
2013	rc = GMMR0CheckSharedModules(pGVM, idCpu);
2014	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2015	break;
2016	}
2017	#endif
2018
2019	#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
2020	case VMMR0_DO_GMM_FIND_DUPLICATE_PAGE:
2021	if (u64Arg)
2022	return VERR_INVALID_PARAMETER;
2023	rc = GMMR0FindDuplicatePageReq(pGVM, (PGMMFINDDUPLICATEPAGEREQ)pReqHdr);
2024	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2025	break;
2026	#endif
2027
2028	case VMMR0_DO_GMM_QUERY_STATISTICS:
2029	if (u64Arg)
2030	return VERR_INVALID_PARAMETER;
2031	rc = GMMR0QueryStatisticsReq(pGVM, (PGMMQUERYSTATISTICSSREQ)pReqHdr);
2032	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2033	break;
2034
2035	case VMMR0_DO_GMM_RESET_STATISTICS:
2036	if (u64Arg)
2037	return VERR_INVALID_PARAMETER;
2038	rc = GMMR0ResetStatisticsReq(pGVM, (PGMMRESETSTATISTICSSREQ)pReqHdr);
2039	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2040	break;
2041
2042	/*
2043	* A quick GCFGM mock-up.
2044	*/
2045	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
2046	case VMMR0_DO_GCFGM_SET_VALUE:
2047	case VMMR0_DO_GCFGM_QUERY_VALUE:
2048	{
2049	if (pGVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
2050	return VERR_INVALID_PARAMETER;
2051	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
2052	if (pReq->Hdr.cbReq != sizeof(*pReq))
2053	return VERR_INVALID_PARAMETER;
2054	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
2055	{
2056	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
2057	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
2058	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
2059	}
2060	else
2061	{
2062	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
2063	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
2064	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
2065	}
2066	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2067	break;
2068	}
2069
2070	/*
2071	* PDM Wrappers.
2072	*/
2073	case VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER:
2074	{
2075	if (!pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
2076	return VERR_INVALID_PARAMETER;
2077	rc = PDMR0DriverCallReqHandler(pGVM, (PPDMDRIVERCALLREQHANDLERREQ)pReqHdr);
2078	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2079	break;
2080	}
2081
2082	case VMMR0_DO_PDM_DEVICE_CREATE:
2083	{
2084	if (!pReqHdr \|\| u64Arg \|\| idCpu != 0)
2085	return VERR_INVALID_PARAMETER;
2086	rc = PDMR0DeviceCreateReqHandler(pGVM, (PPDMDEVICECREATEREQ)pReqHdr);
2087	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2088	break;
2089	}
2090
2091	case VMMR0_DO_PDM_DEVICE_GEN_CALL:
2092	{
2093	if (!pReqHdr \|\| u64Arg)
2094	return VERR_INVALID_PARAMETER;
2095	rc = PDMR0DeviceGenCallReqHandler(pGVM, (PPDMDEVICEGENCALLREQ)pReqHdr, idCpu);
2096	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2097	break;
2098	}
2099
2100	/** @todo Remove the once all devices has been converted to new style! @bugref{9218} */
2101	case VMMR0_DO_PDM_DEVICE_COMPAT_SET_CRITSECT:
2102	{
2103	if (!pReqHdr \|\| u64Arg \|\| idCpu != 0)
2104	return VERR_INVALID_PARAMETER;
2105	rc = PDMR0DeviceCompatSetCritSectReqHandler(pGVM, (PPDMDEVICECOMPATSETCRITSECTREQ)pReqHdr);
2106	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2107	break;
2108	}
2109
2110	/*
2111	* Requests to the internal networking service.
2112	*/
2113	case VMMR0_DO_INTNET_OPEN:
2114	{
2115	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
2116	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pGVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2117	return VERR_INVALID_PARAMETER;
2118	rc = IntNetR0OpenReq(pSession, pReq);
2119	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2120	break;
2121	}
2122
2123	case VMMR0_DO_INTNET_IF_CLOSE:
2124	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pGVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2125	return VERR_INVALID_PARAMETER;
2126	rc = IntNetR0IfCloseReq(pSession, (PINTNETIFCLOSEREQ)pReqHdr);
2127	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2128	break;
2129
2130
2131	case VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS:
2132	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pGVM, ((PINTNETIFGETBUFFERPTRSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2133	return VERR_INVALID_PARAMETER;
2134	rc = IntNetR0IfGetBufferPtrsReq(pSession, (PINTNETIFGETBUFFERPTRSREQ)pReqHdr);
2135	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2136	break;
2137
2138	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
2139	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pGVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2140	return VERR_INVALID_PARAMETER;
2141	rc = IntNetR0IfSetPromiscuousModeReq(pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
2142	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2143	break;
2144
2145	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
2146	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pGVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2147	return VERR_INVALID_PARAMETER;
2148	rc = IntNetR0IfSetMacAddressReq(pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
2149	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2150	break;
2151
2152	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
2153	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pGVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2154	return VERR_INVALID_PARAMETER;
2155	rc = IntNetR0IfSetActiveReq(pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
2156	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2157	break;
2158
2159	case VMMR0_DO_INTNET_IF_SEND:
2160	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pGVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2161	return VERR_INVALID_PARAMETER;
2162	rc = IntNetR0IfSendReq(pSession, (PINTNETIFSENDREQ)pReqHdr);
2163	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2164	break;
2165
2166	case VMMR0_DO_INTNET_IF_WAIT:
2167	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pGVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2168	return VERR_INVALID_PARAMETER;
2169	rc = IntNetR0IfWaitReq(pSession, (PINTNETIFWAITREQ)pReqHdr);
2170	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2171	break;
2172
2173	case VMMR0_DO_INTNET_IF_ABORT_WAIT:
2174	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pGVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2175	return VERR_INVALID_PARAMETER;
2176	rc = IntNetR0IfAbortWaitReq(pSession, (PINTNETIFABORTWAITREQ)pReqHdr);
2177	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2178	break;
2179
2180	#if 0 //def VBOX_WITH_PCI_PASSTHROUGH
2181	/*
2182	* Requests to host PCI driver service.
2183	*/
2184	case VMMR0_DO_PCIRAW_REQ:
2185	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pGVM, ((PPCIRAWSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2186	return VERR_INVALID_PARAMETER;
2187	rc = PciRawR0ProcessReq(pGVM, pSession, (PPCIRAWSENDREQ)pReqHdr);
2188	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2189	break;
2190	#endif
2191
2192	/*
2193	* NEM requests.
2194	*/
2195	#ifdef VBOX_WITH_NEM_R0
2196	# if defined(RT_ARCH_AMD64) && defined(RT_OS_WINDOWS)
2197	case VMMR0_DO_NEM_INIT_VM:
2198	if (u64Arg \|\| pReqHdr \|\| idCpu != 0)
2199	return VERR_INVALID_PARAMETER;
2200	rc = NEMR0InitVM(pGVM);
2201	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2202	break;
2203
2204	case VMMR0_DO_NEM_INIT_VM_PART_2:
2205	if (u64Arg \|\| pReqHdr \|\| idCpu != 0)
2206	return VERR_INVALID_PARAMETER;
2207	rc = NEMR0InitVMPart2(pGVM);
2208	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2209	break;
2210
2211	case VMMR0_DO_NEM_MAP_PAGES:
2212	if (u64Arg \|\| pReqHdr \|\| idCpu == NIL_VMCPUID)
2213	return VERR_INVALID_PARAMETER;
2214	rc = NEMR0MapPages(pGVM, idCpu);
2215	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2216	break;
2217
2218	case VMMR0_DO_NEM_UNMAP_PAGES:
2219	if (u64Arg \|\| pReqHdr \|\| idCpu == NIL_VMCPUID)
2220	return VERR_INVALID_PARAMETER;
2221	rc = NEMR0UnmapPages(pGVM, idCpu);
2222	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2223	break;
2224
2225	case VMMR0_DO_NEM_EXPORT_STATE:
2226	if (u64Arg \|\| pReqHdr \|\| idCpu == NIL_VMCPUID)
2227	return VERR_INVALID_PARAMETER;
2228	rc = NEMR0ExportState(pGVM, idCpu);
2229	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2230	break;
2231
2232	case VMMR0_DO_NEM_IMPORT_STATE:
2233	if (pReqHdr \|\| idCpu == NIL_VMCPUID)
2234	return VERR_INVALID_PARAMETER;
2235	rc = NEMR0ImportState(pGVM, idCpu, u64Arg);
2236	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2237	break;
2238
2239	case VMMR0_DO_NEM_QUERY_CPU_TICK:
2240	if (u64Arg \|\| pReqHdr \|\| idCpu == NIL_VMCPUID)
2241	return VERR_INVALID_PARAMETER;
2242	rc = NEMR0QueryCpuTick(pGVM, idCpu);
2243	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2244	break;
2245
2246	case VMMR0_DO_NEM_RESUME_CPU_TICK_ON_ALL:
2247	if (pReqHdr \|\| idCpu == NIL_VMCPUID)
2248	return VERR_INVALID_PARAMETER;
2249	rc = NEMR0ResumeCpuTickOnAll(pGVM, idCpu, u64Arg);
2250	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2251	break;
2252
2253	case VMMR0_DO_NEM_UPDATE_STATISTICS:
2254	if (u64Arg \|\| pReqHdr)
2255	return VERR_INVALID_PARAMETER;
2256	rc = NEMR0UpdateStatistics(pGVM, idCpu);
2257	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2258	break;
2259
2260	# if 1 && defined(DEBUG_bird)
2261	case VMMR0_DO_NEM_EXPERIMENT:
2262	if (pReqHdr)
2263	return VERR_INVALID_PARAMETER;
2264	rc = NEMR0DoExperiment(pGVM, idCpu, u64Arg);
2265	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2266	break;
2267	# endif
2268	# endif
2269	#endif
2270
2271	/*
2272	* IOM requests.
2273	*/
2274	case VMMR0_DO_IOM_GROW_IO_PORTS:
2275	{
2276	if (pReqHdr \|\| idCpu != 0)
2277	return VERR_INVALID_PARAMETER;
2278	rc = IOMR0IoPortGrowRegistrationTables(pGVM, u64Arg);
2279	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2280	break;
2281	}
2282
2283	case VMMR0_DO_IOM_GROW_IO_PORT_STATS:
2284	{
2285	if (pReqHdr \|\| idCpu != 0)
2286	return VERR_INVALID_PARAMETER;
2287	rc = IOMR0IoPortGrowStatisticsTable(pGVM, u64Arg);
2288	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2289	break;
2290	}
2291
2292	case VMMR0_DO_IOM_GROW_MMIO_REGS:
2293	{
2294	if (pReqHdr \|\| idCpu != 0)
2295	return VERR_INVALID_PARAMETER;
2296	rc = IOMR0MmioGrowRegistrationTables(pGVM, u64Arg);
2297	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2298	break;
2299	}
2300
2301	case VMMR0_DO_IOM_GROW_MMIO_STATS:
2302	{
2303	if (pReqHdr \|\| idCpu != 0)
2304	return VERR_INVALID_PARAMETER;
2305	rc = IOMR0MmioGrowStatisticsTable(pGVM, u64Arg);
2306	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2307	break;
2308	}
2309
2310	case VMMR0_DO_IOM_SYNC_STATS_INDICES:
2311	{
2312	if (pReqHdr \|\| idCpu != 0)
2313	return VERR_INVALID_PARAMETER;
2314	rc = IOMR0IoPortSyncStatisticsIndices(pGVM);
2315	if (RT_SUCCESS(rc))
2316	rc = IOMR0MmioSyncStatisticsIndices(pGVM);
2317	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2318	break;
2319	}
2320
2321	/*
2322	* DBGF requests.
2323	*/
2324	#ifdef VBOX_WITH_DBGF_TRACING
2325	case VMMR0_DO_DBGF_TRACER_CREATE:
2326	{
2327	if (!pReqHdr \|\| u64Arg \|\| idCpu != 0)
2328	return VERR_INVALID_PARAMETER;
2329	rc = DBGFR0TracerCreateReqHandler(pGVM, (PDBGFTRACERCREATEREQ)pReqHdr);
2330	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2331	break;
2332	}
2333
2334	case VMMR0_DO_DBGF_TRACER_CALL_REQ_HANDLER:
2335	{
2336	if (!pReqHdr \|\| u64Arg)
2337	return VERR_INVALID_PARAMETER;
2338	# if 0 /** @todo */
2339	rc = DBGFR0TracerGenCallReqHandler(pGVM, (PDBGFTRACERGENCALLREQ)pReqHdr, idCpu);
2340	# else
2341	rc = VERR_NOT_IMPLEMENTED;
2342	# endif
2343	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2344	break;
2345	}
2346	#endif
2347
2348	case VMMR0_DO_DBGF_BP_INIT:
2349	{
2350	if (!pReqHdr \|\| u64Arg \|\| idCpu != 0)
2351	return VERR_INVALID_PARAMETER;
2352	rc = DBGFR0BpInitReqHandler(pGVM, (PDBGFBPINITREQ)pReqHdr);
2353	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2354	break;
2355	}
2356
2357	case VMMR0_DO_DBGF_BP_CHUNK_ALLOC:
2358	{
2359	if (!pReqHdr \|\| u64Arg \|\| idCpu != 0)
2360	return VERR_INVALID_PARAMETER;
2361	rc = DBGFR0BpChunkAllocReqHandler(pGVM, (PDBGFBPCHUNKALLOCREQ)pReqHdr);
2362	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2363	break;
2364	}
2365
2366	case VMMR0_DO_DBGF_BP_L2_TBL_CHUNK_ALLOC:
2367	{
2368	if (!pReqHdr \|\| u64Arg \|\| idCpu != 0)
2369	return VERR_INVALID_PARAMETER;
2370	rc = DBGFR0BpL2TblChunkAllocReqHandler(pGVM, (PDBGFBPL2TBLCHUNKALLOCREQ)pReqHdr);
2371	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2372	break;
2373	}
2374
2375	case VMMR0_DO_DBGF_BP_OWNER_INIT:
2376	{
2377	if (!pReqHdr \|\| u64Arg \|\| idCpu != 0)
2378	return VERR_INVALID_PARAMETER;
2379	rc = DBGFR0BpOwnerInitReqHandler(pGVM, (PDBGFBPOWNERINITREQ)pReqHdr);
2380	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2381	break;
2382	}
2383
2384	case VMMR0_DO_DBGF_BP_PORTIO_INIT:
2385	{
2386	if (!pReqHdr \|\| u64Arg \|\| idCpu != 0)
2387	return VERR_INVALID_PARAMETER;
2388	rc = DBGFR0BpPortIoInitReqHandler(pGVM, (PDBGFBPINITREQ)pReqHdr);
2389	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2390	break;
2391	}
2392
2393
2394	/*
2395	* TM requests.
2396	*/
2397	case VMMR0_DO_TM_GROW_TIMER_QUEUE:
2398	{
2399	if (pReqHdr \|\| idCpu == NIL_VMCPUID)
2400	return VERR_INVALID_PARAMETER;
2401	rc = TMR0TimerQueueGrow(pGVM, RT_HI_U32(u64Arg), RT_LO_U32(u64Arg));
2402	VMM_CHECK_SMAP_CHECK2(pGVM, RT_NOTHING);
2403	break;
2404	}
2405
2406	/*
2407	* For profiling.
2408	*/
2409	case VMMR0_DO_NOP:
2410	case VMMR0_DO_SLOW_NOP:
2411	return VINF_SUCCESS;
2412
2413	/*
2414	* For testing Ring-0 APIs invoked in this environment.
2415	*/
2416	case VMMR0_DO_TESTS:
2417	/** @todo make new test */
2418	return VINF_SUCCESS;
2419
2420	default:
2421	/*
2422	* We're returning VERR_NOT_SUPPORT here so we've got something else
2423	* than -1 which the interrupt gate glue code might return.
2424	*/
2425	Log(("operation %#x is not supported\n", enmOperation));
2426	return VERR_NOT_SUPPORTED;
2427	}
2428	return rc;
2429	}
2430
2431
2432	/**
2433	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
2434	*
2435	* @returns VBox status code.
2436	* @param pvArgs The argument package
2437	*/
2438	static DECLCALLBACK(int) vmmR0EntryExWrapper(void *pvArgs)
2439	{
2440	PGVMCPU pGVCpu = (PGVMCPU)pvArgs;
2441	return vmmR0EntryExWorker(pGVCpu->vmmr0.s.pGVM,
2442	pGVCpu->vmmr0.s.idCpu,
2443	pGVCpu->vmmr0.s.enmOperation,
2444	pGVCpu->vmmr0.s.pReq,
2445	pGVCpu->vmmr0.s.u64Arg,
2446	pGVCpu->vmmr0.s.pSession);
2447	}
2448
2449
2450	/**
2451	* The Ring 0 entry point, called by the support library (SUP).
2452	*
2453	* @returns VBox status code.
2454	* @param pGVM The global (ring-0) VM structure.
2455	* @param pVM The cross context VM structure.
2456	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
2457	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
2458	* @param enmOperation Which operation to execute.
2459	* @param pReq Pointer to the SUPVMMR0REQHDR packet. Optional.
2460	* @param u64Arg Some simple constant argument.
2461	* @param pSession The session of the caller.
2462	* @remarks Assume called with interrupts _enabled_.
2463	*/
2464	VMMR0DECL(int) VMMR0EntryEx(PGVM pGVM, PVMCC pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation,
2465	PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
2466	{
2467	/*
2468	* Requests that should only happen on the EMT thread will be
2469	* wrapped in a setjmp so we can assert without causing trouble.
2470	*/
2471	if ( pVM != NULL
2472	&& pGVM != NULL
2473	&& pVM == pGVM /** @todo drop pVM or pGVM */
2474	&& idCpu < pGVM->cCpus
2475	&& pGVM->pSession == pSession
2476	&& pGVM->pSelf == pVM)
2477	{
2478	switch (enmOperation)
2479	{
2480	/* These might/will be called before VMMR3Init. */
2481	case VMMR0_DO_GMM_INITIAL_RESERVATION:
2482	case VMMR0_DO_GMM_UPDATE_RESERVATION:
2483	case VMMR0_DO_GMM_ALLOCATE_PAGES:
2484	case VMMR0_DO_GMM_FREE_PAGES:
2485	case VMMR0_DO_GMM_BALLOONED_PAGES:
2486	/* On the mac we might not have a valid jmp buf, so check these as well. */
2487	case VMMR0_DO_VMMR0_INIT:
2488	case VMMR0_DO_VMMR0_TERM:
2489
2490	case VMMR0_DO_PDM_DEVICE_CREATE:
2491	case VMMR0_DO_PDM_DEVICE_GEN_CALL:
2492	case VMMR0_DO_IOM_GROW_IO_PORTS:
2493	case VMMR0_DO_IOM_GROW_IO_PORT_STATS:
2494	case VMMR0_DO_DBGF_BP_INIT:
2495	case VMMR0_DO_DBGF_BP_CHUNK_ALLOC:
2496	case VMMR0_DO_DBGF_BP_L2_TBL_CHUNK_ALLOC:
2497	{
2498	PGVMCPU pGVCpu = &pGVM->aCpus[idCpu];
2499	RTNATIVETHREAD hNativeThread = RTThreadNativeSelf();
2500	if (RT_LIKELY( pGVCpu->hEMT == hNativeThread
2501	&& pGVCpu->hNativeThreadR0 == hNativeThread))
2502	{
2503	if (!pGVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
2504	break;
2505
2506	pGVCpu->vmmr0.s.pGVM = pGVM;
2507	pGVCpu->vmmr0.s.idCpu = idCpu;
2508	pGVCpu->vmmr0.s.enmOperation = enmOperation;
2509	pGVCpu->vmmr0.s.pReq = pReq;
2510	pGVCpu->vmmr0.s.u64Arg = u64Arg;
2511	pGVCpu->vmmr0.s.pSession = pSession;
2512	return vmmR0CallRing3SetJmpEx(&pGVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, pGVCpu,
2513	((uintptr_t)u64Arg << 16) \| (uintptr_t)enmOperation);
2514	}
2515	return VERR_VM_THREAD_NOT_EMT;
2516	}
2517
2518	default:
2519	case VMMR0_DO_PGM_POOL_GROW:
2520	break;
2521	}
2522	}
2523	return vmmR0EntryExWorker(pGVM, idCpu, enmOperation, pReq, u64Arg, pSession);
2524	}
2525
2526
2527	/**
2528	* Checks whether we've armed the ring-0 long jump machinery.
2529	*
2530	* @returns @c true / @c false
2531	* @param pVCpu The cross context virtual CPU structure.
2532	* @thread EMT
2533	* @sa VMMIsLongJumpArmed
2534	*/
2535	VMMR0_INT_DECL(bool) VMMR0IsLongJumpArmed(PVMCPUCC pVCpu)
2536	{
2537	#ifdef RT_ARCH_X86
2538	return pVCpu->vmm.s.CallRing3JmpBufR0.eip
2539	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
2540	#else
2541	return pVCpu->vmm.s.CallRing3JmpBufR0.rip
2542	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
2543	#endif
2544	}
2545
2546
2547	/**
2548	* Checks whether we've done a ring-3 long jump.
2549	*
2550	* @returns @c true / @c false
2551	* @param pVCpu The cross context virtual CPU structure.
2552	* @thread EMT
2553	*/
2554	VMMR0_INT_DECL(bool) VMMR0IsInRing3LongJump(PVMCPUCC pVCpu)
2555	{
2556	return pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
2557	}
2558
2559
2560	/**
2561	* Internal R0 logger worker: Flush logger.
2562	*
2563	* @param pLogger The logger instance to flush.
2564	* @remark This function must be exported!
2565	*/
2566	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
2567	{
2568	#ifdef LOG_ENABLED
2569	/*
2570	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
2571	* (This is a bit paranoid code.)
2572	*/
2573	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_UOFFSETOF(VMMR0LOGGER, Logger));
2574	if ( !VALID_PTR(pR0Logger)
2575	\|\| !VALID_PTR(pR0Logger + 1)
2576	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
2577	{
2578	# ifdef DEBUG
2579	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
2580	# endif
2581	return;
2582	}
2583	if (pR0Logger->fFlushingDisabled)
2584	return; /* quietly */
2585
2586	PVMCC pVM = pR0Logger->pVM;
2587	if ( !VALID_PTR(pVM)
2588	\|\| pVM->pSelf != pVM)
2589	{
2590	# ifdef DEBUG
2591	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pSelf=%p! pLogger=%p\n", pVM, pVM->pSelf, pLogger);
2592	# endif
2593	return;
2594	}
2595
2596	PVMCPUCC pVCpu = VMMGetCpu(pVM);
2597	if (pVCpu)
2598	{
2599	/*
2600	* Check that the jump buffer is armed.
2601	*/
2602	# ifdef RT_ARCH_X86
2603	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
2604	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
2605	# else
2606	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
2607	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
2608	# endif
2609	{
2610	# ifdef DEBUG
2611	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
2612	# endif
2613	return;
2614	}
2615	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
2616	}
2617	# ifdef DEBUG
2618	else
2619	SUPR0Printf("vmmR0LoggerFlush: invalid VCPU context!\n");
2620	# endif
2621	#else
2622	NOREF(pLogger);
2623	#endif /* LOG_ENABLED */
2624	}
2625
2626	#ifdef LOG_ENABLED
2627
2628	/**
2629	* Disables flushing of the ring-0 debug log.
2630	*
2631	* @param pVCpu The cross context virtual CPU structure.
2632	*/
2633	VMMR0_INT_DECL(void) VMMR0LogFlushDisable(PVMCPUCC pVCpu)
2634	{
2635	if (pVCpu->vmm.s.pR0LoggerR0)
2636	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
2637	if (pVCpu->vmm.s.pR0RelLoggerR0)
2638	pVCpu->vmm.s.pR0RelLoggerR0->fFlushingDisabled = true;
2639	}
2640
2641
2642	/**
2643	* Enables flushing of the ring-0 debug log.
2644	*
2645	* @param pVCpu The cross context virtual CPU structure.
2646	*/
2647	VMMR0_INT_DECL(void) VMMR0LogFlushEnable(PVMCPUCC pVCpu)
2648	{
2649	if (pVCpu->vmm.s.pR0LoggerR0)
2650	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
2651	if (pVCpu->vmm.s.pR0RelLoggerR0)
2652	pVCpu->vmm.s.pR0RelLoggerR0->fFlushingDisabled = false;
2653	}
2654
2655
2656	/**
2657	* Checks if log flushing is disabled or not.
2658	*
2659	* @param pVCpu The cross context virtual CPU structure.
2660	*/
2661	VMMR0_INT_DECL(bool) VMMR0IsLogFlushDisabled(PVMCPUCC pVCpu)
2662	{
2663	if (pVCpu->vmm.s.pR0LoggerR0)
2664	return pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled;
2665	if (pVCpu->vmm.s.pR0RelLoggerR0)
2666	return pVCpu->vmm.s.pR0RelLoggerR0->fFlushingDisabled;
2667	return true;
2668	}
2669
2670	#endif /* LOG_ENABLED */
2671
2672	/*
2673	* Override RTLogRelGetDefaultInstanceEx so we can do LogRel to VBox.log from EMTs in ring-0.
2674	*/
2675	DECLEXPORT(PRTLOGGER) RTLogRelGetDefaultInstanceEx(uint32_t fFlagsAndGroup)
2676	{
2677	PGVMCPU pGVCpu = GVMMR0GetGVCpuByEMT(NIL_RTNATIVETHREAD);
2678	if (pGVCpu)
2679	{
2680	PVMCPUCC pVCpu = pGVCpu;
2681	if (RT_VALID_PTR(pVCpu))
2682	{
2683	PVMMR0LOGGER pVmmLogger = pVCpu->vmm.s.pR0RelLoggerR0;
2684	if (RT_VALID_PTR(pVmmLogger))
2685	{
2686	if ( pVmmLogger->fCreated
2687	&& pVmmLogger->pVM == pGVCpu->pGVM)
2688	{
2689	if (pVmmLogger->Logger.fFlags & RTLOGFLAGS_DISABLED)
2690	return NULL;
2691	uint16_t const fFlags = RT_LO_U16(fFlagsAndGroup);
2692	uint16_t const iGroup = RT_HI_U16(fFlagsAndGroup);
2693	if ( iGroup != UINT16_MAX
2694	&& ( ( pVmmLogger->Logger.afGroups[iGroup < pVmmLogger->Logger.cGroups ? iGroup : 0]
2695	& (fFlags \| (uint32_t)RTLOGGRPFLAGS_ENABLED))
2696	!= (fFlags \| (uint32_t)RTLOGGRPFLAGS_ENABLED)))
2697	return NULL;
2698	return &pVmmLogger->Logger;
2699	}
2700	}
2701	}
2702	}
2703	return SUPR0GetDefaultLogRelInstanceEx(fFlagsAndGroup);
2704	}
2705
2706
2707	/*
2708	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
2709	*
2710	* @returns true if the breakpoint should be hit, false if it should be ignored.
2711	*/
2712	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
2713	{
2714	#if 0
2715	return true;
2716	#else
2717	PVMCC pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
2718	if (pVM)
2719	{
2720	PVMCPUCC pVCpu = VMMGetCpu(pVM);
2721
2722	if (pVCpu)
2723	{
2724	# ifdef RT_ARCH_X86
2725	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
2726	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
2727	# else
2728	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
2729	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
2730	# endif
2731	{
2732	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
2733	return RT_FAILURE_NP(rc);
2734	}
2735	}
2736	}
2737	# ifdef RT_OS_LINUX
2738	return true;
2739	# else
2740	return false;
2741	# endif
2742	#endif
2743	}
2744
2745
2746	/*
2747	* Override this so we can push it up to ring-3.
2748	*/
2749	DECLEXPORT(void) RTCALL RTAssertMsg1Weak(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
2750	{
2751	/*
2752	* To the log.
2753	*/
2754	LogAlways(("\n!!R0-Assertion Failed!!\n"
2755	"Expression: %s\n"
2756	"Location : %s(%d) %s\n",
2757	pszExpr, pszFile, uLine, pszFunction));
2758
2759	/*
2760	* To the global VMM buffer.
2761	*/
2762	PVMCC pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
2763	if (pVM)
2764	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
2765	"\n!!R0-Assertion Failed!!\n"
2766	"Expression: %.*s\n"
2767	"Location : %s(%d) %s\n",
2768	sizeof(pVM->vmm.s.szRing0AssertMsg1) / 4 * 3, pszExpr,
2769	pszFile, uLine, pszFunction);
2770
2771	/*
2772	* Continue the normal way.
2773	*/
2774	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
2775	}
2776
2777
2778	/**
2779	* Callback for RTLogFormatV which writes to the ring-3 log port.
2780	* See PFNLOGOUTPUT() for details.
2781	*/
2782	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
2783	{
2784	for (size_t i = 0; i < cbChars; i++)
2785	{
2786	LogAlways(("%c", pachChars[i])); NOREF(pachChars);
2787	}
2788
2789	NOREF(pv);
2790	return cbChars;
2791	}
2792
2793
2794	/*
2795	* Override this so we can push it up to ring-3.
2796	*/
2797	DECLEXPORT(void) RTCALL RTAssertMsg2WeakV(const char *pszFormat, va_list va)
2798	{
2799	va_list vaCopy;
2800
2801	/*
2802	* Push the message to the loggers.
2803	*/
2804	PRTLOGGER pLog = RTLogGetDefaultInstance(); /* Don't initialize it here... */
2805	if (pLog)
2806	{
2807	va_copy(vaCopy, va);
2808	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
2809	va_end(vaCopy);
2810	}
2811	pLog = RTLogRelGetDefaultInstance();
2812	if (pLog)
2813	{
2814	va_copy(vaCopy, va);
2815	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
2816	va_end(vaCopy);
2817	}
2818
2819	/*
2820	* Push it to the global VMM buffer.
2821	*/
2822	PVMCC pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
2823	if (pVM)
2824	{
2825	va_copy(vaCopy, va);
2826	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, vaCopy);
2827	va_end(vaCopy);
2828	}
2829
2830	/*
2831	* Continue the normal way.
2832	*/
2833	RTAssertMsg2V(pszFormat, va);
2834	}
2835

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 90297

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